2 Unix SMB/CIFS implementation.
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 1998-2005
6 Copyright (C) Timur Bakeyev 2005
7 Copyright (C) Bjoern Jacke 2006-2007
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 #include "system/syslog.h"
25 #include "system/capability.h"
26 #include "system/passwd.h"
27 #include "system/filesys.h"
29 #ifdef HAVE_SYS_SYSCTL_H
30 #include <sys/sysctl.h>
33 #ifdef HAVE_SYS_PRCTL_H
34 #include <sys/prctl.h>
38 The idea is that this file will eventually have wrappers around all
39 important system calls in samba. The aims are:
41 - to enable easier porting by putting OS dependent stuff in here
43 - to allow for hooks into other "pseudo-filesystems"
45 - to allow easier integration of things like the japanese extensions
47 - to support the philosophy of Samba to expose the features of
48 the OS within the SMB model. In general whatever file/printer/variable
49 expansions/etc make sense to the OS should be acceptable to Samba.
54 /*******************************************************************
55 A read wrapper that will deal with EINTR.
56 ********************************************************************/
58 ssize_t sys_read(int fd, void *buf, size_t count)
63 ret = read(fd, buf, count);
64 #if defined(EWOULDBLOCK)
65 } while (ret == -1 && (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK));
67 } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
72 /*******************************************************************
73 A write wrapper that will deal with EINTR.
74 ********************************************************************/
76 ssize_t sys_write(int fd, const void *buf, size_t count)
81 ret = write(fd, buf, count);
82 #if defined(EWOULDBLOCK)
83 } while (ret == -1 && (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK));
85 } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
90 /*******************************************************************
91 A writev wrapper that will deal with EINTR.
92 ********************************************************************/
94 ssize_t sys_writev(int fd, const struct iovec *iov, int iovcnt)
99 /* Try to confuse write_data_iov a bit */
100 if ((random() % 5) == 0) {
101 return sys_write(fd, iov[0].iov_base, iov[0].iov_len);
103 if (iov[0].iov_len > 1) {
104 return sys_write(fd, iov[0].iov_base,
105 (random() % (iov[0].iov_len-1)) + 1);
110 ret = writev(fd, iov, iovcnt);
111 #if defined(EWOULDBLOCK)
112 } while (ret == -1 && (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK));
114 } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
119 /*******************************************************************
120 A pread wrapper that will deal with EINTR
121 ********************************************************************/
123 #if defined(HAVE_PREAD)
124 ssize_t sys_pread(int fd, void *buf, size_t count, SMB_OFF_T off)
129 ret = pread(fd, buf, count, off);
130 } while (ret == -1 && errno == EINTR);
135 /*******************************************************************
136 A write wrapper that will deal with EINTR
137 ********************************************************************/
139 #if defined(HAVE_PWRITE)
140 ssize_t sys_pwrite(int fd, const void *buf, size_t count, SMB_OFF_T off)
145 ret = pwrite(fd, buf, count, off);
146 } while (ret == -1 && errno == EINTR);
151 /*******************************************************************
152 A send wrapper that will deal with EINTR or EAGAIN or EWOULDBLOCK.
153 ********************************************************************/
155 ssize_t sys_send(int s, const void *msg, size_t len, int flags)
160 ret = send(s, msg, len, flags);
161 #if defined(EWOULDBLOCK)
162 } while (ret == -1 && (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK));
164 } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
169 /*******************************************************************
170 A recvfrom wrapper that will deal with EINTR.
171 ********************************************************************/
173 ssize_t sys_recvfrom(int s, void *buf, size_t len, int flags, struct sockaddr *from, socklen_t *fromlen)
178 ret = recvfrom(s, buf, len, flags, from, fromlen);
179 #if defined(EWOULDBLOCK)
180 } while (ret == -1 && (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK));
182 } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
187 /*******************************************************************
188 A fcntl wrapper that will deal with EINTR.
189 ********************************************************************/
191 int sys_fcntl_ptr(int fd, int cmd, void *arg)
196 ret = fcntl(fd, cmd, arg);
197 } while (ret == -1 && errno == EINTR);
201 /****************************************************************************
202 Get/Set all the possible time fields from a stat struct as a timespec.
203 ****************************************************************************/
205 static struct timespec get_atimespec(const struct stat *pst)
207 #if !defined(HAVE_STAT_HIRES_TIMESTAMPS)
210 /* Old system - no ns timestamp. */
211 ret.tv_sec = pst->st_atime;
215 #if defined(HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC)
217 #elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
219 ret.tv_sec = pst->st_atime;
220 ret.tv_nsec = pst->st_atimensec;
222 #elif defined(HAVE_STRUCT_STAT_ST_MTIME_N)
224 ret.tv_sec = pst->st_atime;
225 ret.tv_nsec = pst->st_atime_n;
227 #elif defined(HAVE_STRUCT_STAT_ST_UMTIME)
229 ret.tv_sec = pst->st_atime;
230 ret.tv_nsec = pst->st_uatime * 1000;
232 #elif defined(HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC)
233 return pst->st_atimespec;
235 #error CONFIGURE_ERROR_IN_DETECTING_TIMESPEC_IN_STAT
240 static struct timespec get_mtimespec(const struct stat *pst)
242 #if !defined(HAVE_STAT_HIRES_TIMESTAMPS)
245 /* Old system - no ns timestamp. */
246 ret.tv_sec = pst->st_mtime;
250 #if defined(HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC)
252 #elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
254 ret.tv_sec = pst->st_mtime;
255 ret.tv_nsec = pst->st_mtimensec;
257 #elif defined(HAVE_STRUCT_STAT_ST_MTIME_N)
259 ret.tv_sec = pst->st_mtime;
260 ret.tv_nsec = pst->st_mtime_n;
262 #elif defined(HAVE_STRUCT_STAT_ST_UMTIME)
264 ret.tv_sec = pst->st_mtime;
265 ret.tv_nsec = pst->st_umtime * 1000;
267 #elif defined(HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC)
268 return pst->st_mtimespec;
270 #error CONFIGURE_ERROR_IN_DETECTING_TIMESPEC_IN_STAT
275 static struct timespec get_ctimespec(const struct stat *pst)
277 #if !defined(HAVE_STAT_HIRES_TIMESTAMPS)
280 /* Old system - no ns timestamp. */
281 ret.tv_sec = pst->st_ctime;
285 #if defined(HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC)
287 #elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
289 ret.tv_sec = pst->st_ctime;
290 ret.tv_nsec = pst->st_ctimensec;
292 #elif defined(HAVE_STRUCT_STAT_ST_MTIME_N)
294 ret.tv_sec = pst->st_ctime;
295 ret.tv_nsec = pst->st_ctime_n;
297 #elif defined(HAVE_STRUCT_STAT_ST_UMTIME)
299 ret.tv_sec = pst->st_ctime;
300 ret.tv_nsec = pst->st_uctime * 1000;
302 #elif defined(HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC)
303 return pst->st_ctimespec;
305 #error CONFIGURE_ERROR_IN_DETECTING_TIMESPEC_IN_STAT
310 /****************************************************************************
311 Return the best approximation to a 'create time' under UNIX from a stat
313 ****************************************************************************/
315 static struct timespec calc_create_time_stat(const struct stat *st)
317 struct timespec ret, ret1;
318 struct timespec c_time = get_ctimespec(st);
319 struct timespec m_time = get_mtimespec(st);
320 struct timespec a_time = get_atimespec(st);
322 ret = timespec_compare(&c_time, &m_time) < 0 ? c_time : m_time;
323 ret1 = timespec_compare(&ret, &a_time) < 0 ? ret : a_time;
325 if(!null_timespec(ret1)) {
330 * One of ctime, mtime or atime was zero (probably atime).
331 * Just return MIN(ctime, mtime).
336 /****************************************************************************
337 Return the best approximation to a 'create time' under UNIX from a stat_ex
339 ****************************************************************************/
341 static struct timespec calc_create_time_stat_ex(const struct stat_ex *st)
343 struct timespec ret, ret1;
344 struct timespec c_time = st->st_ex_ctime;
345 struct timespec m_time = st->st_ex_mtime;
346 struct timespec a_time = st->st_ex_atime;
348 ret = timespec_compare(&c_time, &m_time) < 0 ? c_time : m_time;
349 ret1 = timespec_compare(&ret, &a_time) < 0 ? ret : a_time;
351 if(!null_timespec(ret1)) {
356 * One of ctime, mtime or atime was zero (probably atime).
357 * Just return MIN(ctime, mtime).
362 /****************************************************************************
363 Return the 'create time' from a stat struct if it exists (birthtime) or else
364 use the best approximation.
365 ****************************************************************************/
367 static void make_create_timespec(const struct stat *pst, struct stat_ex *dst,
368 bool fake_dir_create_times)
370 if (S_ISDIR(pst->st_mode) && fake_dir_create_times) {
371 dst->st_ex_btime.tv_sec = 315493200L; /* 1/1/1980 */
372 dst->st_ex_btime.tv_nsec = 0;
375 dst->st_ex_calculated_birthtime = false;
377 #if defined(HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC)
378 dst->st_ex_btime = pst->st_birthtimespec;
379 #elif defined(HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC)
380 dst->st_ex_btime.tv_sec = pst->st_birthtime;
381 dst->st_ex_btime.tv_nsec = pst->st_birthtimenspec;
382 #elif defined(HAVE_STRUCT_STAT_ST_BIRTHTIME)
383 dst->st_ex_btime.tv_sec = pst->st_birthtime;
384 dst->st_ex_btime.tv_nsec = 0;
386 dst->st_ex_btime = calc_create_time_stat(pst);
387 dst->st_ex_calculated_birthtime = true;
390 /* Deal with systems that don't initialize birthtime correctly.
391 * Pointed out by SATOH Fumiyasu <fumiyas@osstech.jp>.
393 if (null_timespec(dst->st_ex_btime)) {
394 dst->st_ex_btime = calc_create_time_stat(pst);
395 dst->st_ex_calculated_birthtime = true;
399 /****************************************************************************
400 If we update a timestamp in a stat_ex struct we may have to recalculate
401 the birthtime. For now only implement this for write time, but we may
402 also need to do it for atime and ctime. JRA.
403 ****************************************************************************/
405 void update_stat_ex_mtime(struct stat_ex *dst,
406 struct timespec write_ts)
408 dst->st_ex_mtime = write_ts;
410 /* We may have to recalculate btime. */
411 if (dst->st_ex_calculated_birthtime) {
412 dst->st_ex_btime = calc_create_time_stat_ex(dst);
416 void update_stat_ex_create_time(struct stat_ex *dst,
417 struct timespec create_time)
419 dst->st_ex_btime = create_time;
420 dst->st_ex_calculated_birthtime = false;
423 void init_stat_ex_from_stat (struct stat_ex *dst,
424 const struct stat *src,
425 bool fake_dir_create_times)
427 dst->st_ex_dev = src->st_dev;
428 dst->st_ex_ino = src->st_ino;
429 dst->st_ex_mode = src->st_mode;
430 dst->st_ex_nlink = src->st_nlink;
431 dst->st_ex_uid = src->st_uid;
432 dst->st_ex_gid = src->st_gid;
433 dst->st_ex_rdev = src->st_rdev;
434 dst->st_ex_size = src->st_size;
435 dst->st_ex_atime = get_atimespec(src);
436 dst->st_ex_mtime = get_mtimespec(src);
437 dst->st_ex_ctime = get_ctimespec(src);
438 make_create_timespec(src, dst, fake_dir_create_times);
439 #ifdef HAVE_STAT_ST_BLKSIZE
440 dst->st_ex_blksize = src->st_blksize;
442 dst->st_ex_blksize = STAT_ST_BLOCKSIZE;
445 #ifdef HAVE_STAT_ST_BLOCKS
446 dst->st_ex_blocks = src->st_blocks;
448 dst->st_ex_blocks = src->st_size / dst->st_ex_blksize + 1;
451 #ifdef HAVE_STAT_ST_FLAGS
452 dst->st_ex_flags = src->st_flags;
454 dst->st_ex_flags = 0;
458 /*******************************************************************
460 ********************************************************************/
462 int sys_stat(const char *fname, SMB_STRUCT_STAT *sbuf,
463 bool fake_dir_create_times)
467 ret = stat(fname, &statbuf);
469 /* we always want directories to appear zero size */
470 if (S_ISDIR(statbuf.st_mode)) {
473 init_stat_ex_from_stat(sbuf, &statbuf, fake_dir_create_times);
478 /*******************************************************************
480 ********************************************************************/
482 int sys_fstat(int fd, SMB_STRUCT_STAT *sbuf, bool fake_dir_create_times)
486 ret = fstat(fd, &statbuf);
488 /* we always want directories to appear zero size */
489 if (S_ISDIR(statbuf.st_mode)) {
492 init_stat_ex_from_stat(sbuf, &statbuf, fake_dir_create_times);
497 /*******************************************************************
499 ********************************************************************/
501 int sys_lstat(const char *fname,SMB_STRUCT_STAT *sbuf,
502 bool fake_dir_create_times)
506 ret = lstat(fname, &statbuf);
508 /* we always want directories to appear zero size */
509 if (S_ISDIR(statbuf.st_mode)) {
512 init_stat_ex_from_stat(sbuf, &statbuf, fake_dir_create_times);
517 /*******************************************************************
518 An posix_fallocate() wrapper.
519 ********************************************************************/
520 int sys_posix_fallocate(int fd, SMB_OFF_T offset, SMB_OFF_T len)
522 #if defined(HAVE_POSIX_FALLOCATE) && !defined(HAVE_BROKEN_POSIX_FALLOCATE)
523 return posix_fallocate(fd, offset, len);
524 #elif defined(F_RESVSP64)
525 /* this handles XFS on IRIX */
527 SMB_OFF_T new_len = offset + len;
531 /* unlikely to get a too large file on a 64bit system but ... */
535 fl.l_whence = SEEK_SET;
539 ret=fcntl(fd, F_RESVSP64, &fl);
544 /* Make sure the file gets enlarged after we allocated space: */
546 if (new_len > sbuf.st_size)
547 ftruncate64(fd, new_len);
554 /*******************************************************************
555 An fallocate() function that matches the semantics of the Linux one.
556 ********************************************************************/
558 #ifdef HAVE_LINUX_FALLOC_H
559 #include <linux/falloc.h>
562 int sys_fallocate(int fd, enum vfs_fallocate_mode mode, SMB_OFF_T offset, SMB_OFF_T len)
564 #if defined(HAVE_LINUX_FALLOCATE64) || defined(HAVE_LINUX_FALLOCATE)
567 case VFS_FALLOCATE_EXTEND_SIZE:
570 case VFS_FALLOCATE_KEEP_SIZE:
571 lmode = FALLOC_FL_KEEP_SIZE;
577 #if defined(HAVE_LINUX_FALLOCATE)
578 return fallocate(fd, lmode, offset, len);
581 /* TODO - plumb in fallocate from other filesysetms like VXFS etc. JRA. */
587 #if HAVE_KERNEL_SHARE_MODES
589 #define LOCK_MAND 32 /* This is a mandatory flock */
590 #define LOCK_READ 64 /* ... Which allows concurrent read operations */
591 #define LOCK_WRITE 128 /* ... Which allows concurrent write operations */
592 #define LOCK_RW 192 /* ... Which allows concurrent read & write ops */
596 /*******************************************************************
597 A flock() wrapper that will perform the kernel flock.
598 ********************************************************************/
600 void kernel_flock(int fd, uint32 share_mode, uint32 access_mask)
602 #if HAVE_KERNEL_SHARE_MODES
604 if (share_mode == FILE_SHARE_WRITE) {
605 kernel_mode = LOCK_MAND|LOCK_WRITE;
606 } else if (share_mode == FILE_SHARE_READ) {
607 kernel_mode = LOCK_MAND|LOCK_READ;
608 } else if (share_mode == FILE_SHARE_NONE) {
609 kernel_mode = LOCK_MAND;
612 flock(fd, kernel_mode);
620 /*******************************************************************
622 ********************************************************************/
624 SMB_STRUCT_DIR *sys_opendir(const char *name)
626 return opendir(name);
629 /*******************************************************************
630 An fdopendir wrapper.
631 Ugly hack - we need dirfd for this to work correctly in the
633 ********************************************************************/
635 SMB_STRUCT_DIR *sys_fdopendir(int fd)
637 #if defined(HAVE_FDOPENDIR) && defined(HAVE_DIRFD)
638 return fdopendir(fd);
645 /*******************************************************************
647 ********************************************************************/
649 SMB_STRUCT_DIRENT *sys_readdir(SMB_STRUCT_DIR *dirp)
651 return readdir(dirp);
654 /*******************************************************************
656 ********************************************************************/
658 void sys_seekdir(SMB_STRUCT_DIR *dirp, long offset)
660 seekdir(dirp, offset);
663 /*******************************************************************
665 ********************************************************************/
667 long sys_telldir(SMB_STRUCT_DIR *dirp)
669 return (long)telldir(dirp);
672 /*******************************************************************
674 ********************************************************************/
676 void sys_rewinddir(SMB_STRUCT_DIR *dirp)
681 /*******************************************************************
683 ********************************************************************/
685 int sys_closedir(SMB_STRUCT_DIR *dirp)
687 return closedir(dirp);
690 /*******************************************************************
692 ********************************************************************/
694 int sys_mknod(const char *path, mode_t mode, SMB_DEV_T dev)
696 #if defined(HAVE_MKNOD)
697 return mknod(path, mode, dev);
699 /* No mknod system call. */
705 /*******************************************************************
706 The wait() calls vary between systems
707 ********************************************************************/
709 int sys_waitpid(pid_t pid,int *status,int options)
712 return waitpid(pid,status,options);
713 #else /* HAVE_WAITPID */
714 return wait4(pid, status, options, NULL);
715 #endif /* HAVE_WAITPID */
718 /*******************************************************************
719 System wrapper for getwd. Always returns MALLOC'ed memory, or NULL
720 on error (malloc fail usually).
721 ********************************************************************/
723 char *sys_getwd(void)
725 #ifdef GETCWD_TAKES_NULL
726 return getcwd(NULL, 0);
728 char *wd = NULL, *s = NULL;
729 size_t allocated = PATH_MAX;
732 s = SMB_REALLOC_ARRAY(s, char, allocated);
736 wd = getcwd(s, allocated);
740 if (errno != ERANGE) {
745 if (allocated < PATH_MAX) {
752 char *s = SMB_MALLOC_ARRAY(char, PATH_MAX);
760 #if defined(HAVE_POSIX_CAPABILITIES)
762 /**************************************************************************
763 Try and abstract process capabilities (for systems that have them).
764 ****************************************************************************/
766 /* Set the POSIX capabilities needed for the given purpose into the effective
767 * capability set of the current process. Make sure they are always removed
768 * from the inheritable set, because there is no circumstance in which our
769 * children should inherit our elevated privileges.
771 static bool set_process_capability(enum smbd_capability capability,
774 cap_value_t cap_vals[2] = {0};
775 int num_cap_vals = 0;
779 #if defined(HAVE_PRCTL) && defined(PR_GET_KEEPCAPS) && defined(PR_SET_KEEPCAPS)
780 /* On Linux, make sure that any capabilities we grab are sticky
781 * across UID changes. We expect that this would allow us to keep both
782 * the effective and permitted capability sets, but as of circa 2.6.16,
783 * only the permitted set is kept. It is a bug (which we work around)
784 * that the effective set is lost, but we still require the effective
787 if (!prctl(PR_GET_KEEPCAPS)) {
788 prctl(PR_SET_KEEPCAPS, 1);
792 cap = cap_get_proc();
794 DEBUG(0,("set_process_capability: cap_get_proc failed: %s\n",
799 switch (capability) {
800 case KERNEL_OPLOCK_CAPABILITY:
801 #ifdef CAP_NETWORK_MGT
802 /* IRIX has CAP_NETWORK_MGT for oplocks. */
803 cap_vals[num_cap_vals++] = CAP_NETWORK_MGT;
806 case DMAPI_ACCESS_CAPABILITY:
807 #ifdef CAP_DEVICE_MGT
808 /* IRIX has CAP_DEVICE_MGT for DMAPI access. */
809 cap_vals[num_cap_vals++] = CAP_DEVICE_MGT;
811 /* Linux has CAP_MKNOD for DMAPI access. */
812 cap_vals[num_cap_vals++] = CAP_MKNOD;
815 case LEASE_CAPABILITY:
817 cap_vals[num_cap_vals++] = CAP_LEASE;
822 SMB_ASSERT(num_cap_vals <= ARRAY_SIZE(cap_vals));
824 if (num_cap_vals == 0) {
829 cap_set_flag(cap, CAP_EFFECTIVE, num_cap_vals, cap_vals,
830 enable ? CAP_SET : CAP_CLEAR);
832 /* We never want to pass capabilities down to our children, so make
833 * sure they are not inherited.
835 cap_set_flag(cap, CAP_INHERITABLE, num_cap_vals, cap_vals, CAP_CLEAR);
837 if (cap_set_proc(cap) == -1) {
838 DEBUG(0, ("set_process_capability: cap_set_proc failed: %s\n",
848 #endif /* HAVE_POSIX_CAPABILITIES */
850 /****************************************************************************
851 Gain the oplock capability from the kernel if possible.
852 ****************************************************************************/
854 void set_effective_capability(enum smbd_capability capability)
856 #if defined(HAVE_POSIX_CAPABILITIES)
857 set_process_capability(capability, True);
858 #endif /* HAVE_POSIX_CAPABILITIES */
861 void drop_effective_capability(enum smbd_capability capability)
863 #if defined(HAVE_POSIX_CAPABILITIES)
864 set_process_capability(capability, False);
865 #endif /* HAVE_POSIX_CAPABILITIES */
868 /**************************************************************************
869 Wrapper for random().
870 ****************************************************************************/
872 long sys_random(void)
874 #if defined(HAVE_RANDOM)
875 return (long)random();
876 #elif defined(HAVE_RAND)
879 DEBUG(0,("Error - no random function available !\n"));
884 /**************************************************************************
885 Wrapper for srandom().
886 ****************************************************************************/
888 void sys_srandom(unsigned int seed)
890 #if defined(HAVE_SRANDOM)
892 #elif defined(HAVE_SRAND)
895 DEBUG(0,("Error - no srandom function available !\n"));
901 #define NGROUPS_MAX 32 /* Guess... */
904 /**************************************************************************
905 Returns equivalent to NGROUPS_MAX - using sysconf if needed.
906 ****************************************************************************/
910 #if defined(SYSCONF_SC_NGROUPS_MAX)
911 int ret = sysconf(_SC_NGROUPS_MAX);
912 return (ret == -1) ? NGROUPS_MAX : ret;
918 /**************************************************************************
919 Wrap setgroups and getgroups for systems that declare getgroups() as
920 returning an array of gid_t, but actuall return an array of int.
921 ****************************************************************************/
923 #if defined(HAVE_BROKEN_GETGROUPS)
925 #ifdef HAVE_BROKEN_GETGROUPS
931 static int sys_broken_getgroups(int setlen, gid_t *gidset)
938 return getgroups(setlen, &gid);
942 * Broken case. We need to allocate a
943 * GID_T array of size setlen.
952 setlen = groups_max();
954 if((group_list = SMB_MALLOC_ARRAY(GID_T, setlen)) == NULL) {
955 DEBUG(0,("sys_getgroups: Malloc fail.\n"));
959 if((ngroups = getgroups(setlen, group_list)) < 0) {
960 int saved_errno = errno;
961 SAFE_FREE(group_list);
966 for(i = 0; i < ngroups; i++)
967 gidset[i] = (gid_t)group_list[i];
969 SAFE_FREE(group_list);
973 static int sys_broken_setgroups(int setlen, gid_t *gidset)
981 if (setlen < 0 || setlen > groups_max()) {
987 * Broken case. We need to allocate a
988 * GID_T array of size setlen.
991 if((group_list = SMB_MALLOC_ARRAY(GID_T, setlen)) == NULL) {
992 DEBUG(0,("sys_setgroups: Malloc fail.\n"));
996 for(i = 0; i < setlen; i++)
997 group_list[i] = (GID_T) gidset[i];
999 if(setgroups(setlen, group_list) != 0) {
1000 int saved_errno = errno;
1001 SAFE_FREE(group_list);
1002 errno = saved_errno;
1006 SAFE_FREE(group_list);
1010 #endif /* HAVE_BROKEN_GETGROUPS */
1012 /* This is a list of systems that require the first GID passed to setgroups(2)
1013 * to be the effective GID. If your system is one of these, add it here.
1015 #if defined (FREEBSD) || defined (DARWINOS)
1016 #define USE_BSD_SETGROUPS
1019 #if defined(USE_BSD_SETGROUPS)
1020 /* Depending on the particular BSD implementation, the first GID that is
1021 * passed to setgroups(2) will either be ignored or will set the credential's
1022 * effective GID. In either case, the right thing to do is to guarantee that
1023 * gidset[0] is the effective GID.
1025 static int sys_bsd_setgroups(gid_t primary_gid, int setlen, const gid_t *gidset)
1027 gid_t *new_gidset = NULL;
1031 /* setgroups(2) will fail with EINVAL if we pass too many groups. */
1034 /* No group list, just make sure we are setting the efective GID. */
1036 return setgroups(1, &primary_gid);
1039 /* If the primary gid is not the first array element, grow the array
1040 * and insert it at the front.
1042 if (gidset[0] != primary_gid) {
1043 new_gidset = SMB_MALLOC_ARRAY(gid_t, setlen + 1);
1044 if (new_gidset == NULL) {
1048 memcpy(new_gidset + 1, gidset, (setlen * sizeof(gid_t)));
1049 new_gidset[0] = primary_gid;
1054 DEBUG(3, ("forced to truncate group list from %d to %d\n",
1059 #if defined(HAVE_BROKEN_GETGROUPS)
1060 ret = sys_broken_setgroups(setlen, new_gidset ? new_gidset : gidset);
1062 ret = setgroups(setlen, new_gidset ? new_gidset : gidset);
1067 SAFE_FREE(new_gidset);
1074 #endif /* USE_BSD_SETGROUPS */
1076 /**************************************************************************
1077 Wrapper for getgroups. Deals with broken (int) case.
1078 ****************************************************************************/
1080 int sys_getgroups(int setlen, gid_t *gidset)
1082 #if defined(HAVE_BROKEN_GETGROUPS)
1083 return sys_broken_getgroups(setlen, gidset);
1085 return getgroups(setlen, gidset);
1089 /**************************************************************************
1090 Wrapper for setgroups. Deals with broken (int) case and BSD case.
1091 ****************************************************************************/
1093 int sys_setgroups(gid_t UNUSED(primary_gid), int setlen, gid_t *gidset)
1095 #if !defined(HAVE_SETGROUPS)
1098 #endif /* HAVE_SETGROUPS */
1100 #if defined(USE_BSD_SETGROUPS)
1101 return sys_bsd_setgroups(primary_gid, setlen, gidset);
1102 #elif defined(HAVE_BROKEN_GETGROUPS)
1103 return sys_broken_setgroups(setlen, gidset);
1105 return setgroups(setlen, gidset);
1109 /**************************************************************************
1110 Extract a command into an arg list.
1111 ****************************************************************************/
1113 static char **extract_args(TALLOC_CTX *mem_ctx, const char *command)
1122 if (!(trunc_cmd = talloc_strdup(mem_ctx, command))) {
1123 DEBUG(0, ("talloc failed\n"));
1127 if(!(ptr = strtok_r(trunc_cmd, " \t", &saveptr))) {
1128 TALLOC_FREE(trunc_cmd);
1137 for( argcl = 1; ptr; ptr = strtok_r(NULL, " \t", &saveptr))
1140 TALLOC_FREE(trunc_cmd);
1142 if (!(argl = talloc_array(mem_ctx, char *, argcl + 1))) {
1147 * Now do the extraction.
1150 if (!(trunc_cmd = talloc_strdup(mem_ctx, command))) {
1154 ptr = strtok_r(trunc_cmd, " \t", &saveptr);
1157 if (!(argl[i++] = talloc_strdup(argl, ptr))) {
1161 while((ptr = strtok_r(NULL, " \t", &saveptr)) != NULL) {
1163 if (!(argl[i++] = talloc_strdup(argl, ptr))) {
1169 TALLOC_FREE(trunc_cmd);
1173 DEBUG(0, ("talloc failed\n"));
1174 TALLOC_FREE(trunc_cmd);
1180 /**************************************************************************
1181 Wrapper for popen. Safer as it doesn't search a path.
1182 Modified from the glibc sources.
1183 modified by tridge to return a file descriptor. We must kick our FILE* habit
1184 ****************************************************************************/
1186 typedef struct _popen_list
1190 struct _popen_list *next;
1193 static popen_list *popen_chain;
1195 int sys_popen(const char *command)
1197 int parent_end, child_end;
1199 popen_list *entry = NULL;
1202 if (pipe(pipe_fds) < 0)
1205 parent_end = pipe_fds[0];
1206 child_end = pipe_fds[1];
1213 if((entry = SMB_MALLOC_P(popen_list)) == NULL)
1216 ZERO_STRUCTP(entry);
1219 * Extract the command and args into a NULL terminated array.
1222 if(!(argl = extract_args(NULL, command)))
1225 entry->child_pid = fork();
1227 if (entry->child_pid == -1) {
1231 if (entry->child_pid == 0) {
1237 int child_std_end = STDOUT_FILENO;
1241 if (child_end != child_std_end) {
1242 dup2 (child_end, child_std_end);
1247 * POSIX.2: "popen() shall ensure that any streams from previous
1248 * popen() calls that remain open in the parent process are closed
1249 * in the new child process."
1252 for (p = popen_chain; p; p = p->next)
1255 execv(argl[0], argl);
1266 /* Link into popen_chain. */
1267 entry->next = popen_chain;
1268 popen_chain = entry;
1269 entry->fd = parent_end;
1282 /**************************************************************************
1283 Wrapper for pclose. Modified from the glibc sources.
1284 ****************************************************************************/
1286 int sys_pclose(int fd)
1289 popen_list **ptr = &popen_chain;
1290 popen_list *entry = NULL;
1294 /* Unlink from popen_chain. */
1295 for ( ; *ptr != NULL; ptr = &(*ptr)->next) {
1296 if ((*ptr)->fd == fd) {
1298 *ptr = (*ptr)->next;
1304 if (status < 0 || close(entry->fd) < 0)
1308 * As Samba is catching and eating child process
1309 * exits we don't really care about the child exit
1310 * code, a -1 with errno = ECHILD will do fine for us.
1314 wait_pid = sys_waitpid (entry->child_pid, &wstatus, 0);
1315 } while (wait_pid == -1 && errno == EINTR);
1324 /**************************************************************************
1325 Wrapper for Admin Logs.
1326 ****************************************************************************/
1328 void sys_adminlog(int priority, const char *format_str, ...)
1332 char *msgbuf = NULL;
1334 va_start( ap, format_str );
1335 ret = vasprintf( &msgbuf, format_str, ap );
1341 #if defined(HAVE_SYSLOG)
1342 syslog( priority, "%s", msgbuf );
1344 DEBUG(0,("%s", msgbuf ));
1349 /******** Solaris EA helper function prototypes ********/
1350 #ifdef HAVE_ATTROPEN
1351 #define SOLARIS_ATTRMODE S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP
1352 static int solaris_write_xattr(int attrfd, const char *value, size_t size);
1353 static ssize_t solaris_read_xattr(int attrfd, void *value, size_t size);
1354 static ssize_t solaris_list_xattr(int attrdirfd, char *list, size_t size);
1355 static int solaris_unlinkat(int attrdirfd, const char *name);
1356 static int solaris_attropen(const char *path, const char *attrpath, int oflag, mode_t mode);
1357 static int solaris_openat(int fildes, const char *path, int oflag, mode_t mode);
1360 /**************************************************************************
1361 Wrappers for extented attribute calls. Based on the Linux package with
1362 support for IRIX and (Net|Free)BSD also. Expand as other systems have them.
1363 ****************************************************************************/
1365 ssize_t sys_getxattr (const char *path, const char *name, void *value, size_t size)
1367 #if defined(HAVE_GETXATTR)
1368 #ifndef XATTR_ADD_OPT
1369 return getxattr(path, name, value, size);
1372 return getxattr(path, name, value, size, 0, options);
1374 #elif defined(HAVE_GETEA)
1375 return getea(path, name, value, size);
1376 #elif defined(HAVE_EXTATTR_GET_FILE)
1379 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1380 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1381 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1383 * The BSD implementation has a nasty habit of silently truncating
1384 * the returned value to the size of the buffer, so we have to check
1385 * that the buffer is large enough to fit the returned value.
1387 if((retval=extattr_get_file(path, attrnamespace, attrname, NULL, 0)) >= 0) {
1392 if((retval=extattr_get_file(path, attrnamespace, attrname, value, size)) >= 0)
1396 DEBUG(10,("sys_getxattr: extattr_get_file() failed with: %s\n", strerror(errno)));
1398 #elif defined(HAVE_ATTR_GET)
1399 int retval, flags = 0;
1400 int valuelength = (int)size;
1401 char *attrname = strchr(name,'.') + 1;
1403 if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
1405 retval = attr_get(path, attrname, (char *)value, &valuelength, flags);
1407 return retval ? retval : valuelength;
1408 #elif defined(HAVE_ATTROPEN)
1410 int attrfd = solaris_attropen(path, name, O_RDONLY, 0);
1412 ret = solaris_read_xattr(attrfd, value, size);
1422 ssize_t sys_lgetxattr (const char *path, const char *name, void *value, size_t size)
1424 #if defined(HAVE_LGETXATTR)
1425 return lgetxattr(path, name, value, size);
1426 #elif defined(HAVE_GETXATTR) && defined(XATTR_ADD_OPT)
1427 int options = XATTR_NOFOLLOW;
1428 return getxattr(path, name, value, size, 0, options);
1429 #elif defined(HAVE_LGETEA)
1430 return lgetea(path, name, value, size);
1431 #elif defined(HAVE_EXTATTR_GET_LINK)
1434 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1435 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1436 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1438 if((retval=extattr_get_link(path, attrnamespace, attrname, NULL, 0)) >= 0) {
1443 if((retval=extattr_get_link(path, attrnamespace, attrname, value, size)) >= 0)
1447 DEBUG(10,("sys_lgetxattr: extattr_get_link() failed with: %s\n", strerror(errno)));
1449 #elif defined(HAVE_ATTR_GET)
1450 int retval, flags = ATTR_DONTFOLLOW;
1451 int valuelength = (int)size;
1452 char *attrname = strchr(name,'.') + 1;
1454 if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
1456 retval = attr_get(path, attrname, (char *)value, &valuelength, flags);
1458 return retval ? retval : valuelength;
1459 #elif defined(HAVE_ATTROPEN)
1461 int attrfd = solaris_attropen(path, name, O_RDONLY|AT_SYMLINK_NOFOLLOW, 0);
1463 ret = solaris_read_xattr(attrfd, value, size);
1473 ssize_t sys_fgetxattr (int filedes, const char *name, void *value, size_t size)
1475 #if defined(HAVE_FGETXATTR)
1476 #ifndef XATTR_ADD_OPT
1477 return fgetxattr(filedes, name, value, size);
1480 return fgetxattr(filedes, name, value, size, 0, options);
1482 #elif defined(HAVE_FGETEA)
1483 return fgetea(filedes, name, value, size);
1484 #elif defined(HAVE_EXTATTR_GET_FD)
1487 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1488 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1489 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1491 if((retval=extattr_get_fd(filedes, attrnamespace, attrname, NULL, 0)) >= 0) {
1496 if((retval=extattr_get_fd(filedes, attrnamespace, attrname, value, size)) >= 0)
1500 DEBUG(10,("sys_fgetxattr: extattr_get_fd() failed with: %s\n", strerror(errno)));
1502 #elif defined(HAVE_ATTR_GETF)
1503 int retval, flags = 0;
1504 int valuelength = (int)size;
1505 char *attrname = strchr(name,'.') + 1;
1507 if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
1509 retval = attr_getf(filedes, attrname, (char *)value, &valuelength, flags);
1511 return retval ? retval : valuelength;
1512 #elif defined(HAVE_ATTROPEN)
1514 int attrfd = solaris_openat(filedes, name, O_RDONLY|O_XATTR, 0);
1516 ret = solaris_read_xattr(attrfd, value, size);
1526 #if defined(HAVE_EXTATTR_LIST_FILE)
1528 #define EXTATTR_PREFIX(s) (s), (sizeof((s))-1)
1536 { EXTATTR_NAMESPACE_SYSTEM, EXTATTR_PREFIX("system.") },
1537 { EXTATTR_NAMESPACE_USER, EXTATTR_PREFIX("user.") },
1545 static ssize_t bsd_attr_list (int type, extattr_arg arg, char *list, size_t size)
1547 ssize_t list_size, total_size = 0;
1550 /* Iterate through extattr(2) namespaces */
1551 for(t = 0; t < ARRAY_SIZE(extattr); t++) {
1553 #if defined(HAVE_EXTATTR_LIST_FILE)
1555 list_size = extattr_list_file(arg.path, extattr[t].space, list, size);
1558 #if defined(HAVE_EXTATTR_LIST_LINK)
1560 list_size = extattr_list_link(arg.path, extattr[t].space, list, size);
1563 #if defined(HAVE_EXTATTR_LIST_FD)
1565 list_size = extattr_list_fd(arg.filedes, extattr[t].space, list, size);
1572 /* Some error happend. Errno should be set by the previous call */
1578 /* XXX: Call with an empty buffer may be used to calculate
1579 necessary buffer size. Unfortunately, we can't say, how
1580 many attributes were returned, so here is the potential
1581 problem with the emulation.
1584 /* Take the worse case of one char attribute names -
1585 two bytes per name plus one more for sanity.
1587 total_size += list_size + (list_size/2 + 1)*extattr[t].len;
1590 /* Count necessary offset to fit namespace prefixes */
1592 for(i = 0; i < list_size; i += list[i] + 1)
1593 len += extattr[t].len;
1595 total_size += list_size + len;
1596 /* Buffer is too small to fit the results */
1597 if(total_size > size) {
1601 /* Shift results back, so we can prepend prefixes */
1602 buf = (char *)memmove(list + len, list, list_size);
1604 for(i = 0; i < list_size; i += len + 1) {
1606 strncpy(list, extattr[t].name, extattr[t].len + 1);
1607 list += extattr[t].len;
1608 strncpy(list, buf + i + 1, len);
1619 #if defined(HAVE_ATTR_LIST) && defined(HAVE_SYS_ATTRIBUTES_H)
1620 static char attr_buffer[ATTR_MAX_VALUELEN];
1622 static ssize_t irix_attr_list(const char *path, int filedes, char *list, size_t size, int flags)
1624 int retval = 0, index;
1625 attrlist_cursor_t *cursor = 0;
1627 attrlist_t * al = (attrlist_t *)attr_buffer;
1629 size_t ent_size, left = size;
1634 retval = attr_listf(filedes, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
1636 retval = attr_list(path, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
1638 for (index = 0; index < al->al_count; index++) {
1639 ae = ATTR_ENTRY(attr_buffer, index);
1640 ent_size = strlen(ae->a_name) + sizeof("user.");
1641 if (left >= ent_size) {
1642 strncpy(bp, "user.", sizeof("user."));
1643 strncat(bp, ae->a_name, ent_size - sizeof("user."));
1651 total_size += ent_size;
1653 if (al->al_more == 0) break;
1660 retval = attr_listf(filedes, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
1662 retval = attr_list(path, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
1664 for (index = 0; index < al->al_count; index++) {
1665 ae = ATTR_ENTRY(attr_buffer, index);
1666 ent_size = strlen(ae->a_name) + sizeof("system.");
1667 if (left >= ent_size) {
1668 strncpy(bp, "system.", sizeof("system."));
1669 strncat(bp, ae->a_name, ent_size - sizeof("system."));
1677 total_size += ent_size;
1679 if (al->al_more == 0) break;
1682 return (ssize_t)(retval ? retval : total_size);
1687 ssize_t sys_listxattr (const char *path, char *list, size_t size)
1689 #if defined(HAVE_LISTXATTR)
1690 #ifndef XATTR_ADD_OPT
1691 return listxattr(path, list, size);
1694 return listxattr(path, list, size, options);
1696 #elif defined(HAVE_LISTEA)
1697 return listea(path, list, size);
1698 #elif defined(HAVE_EXTATTR_LIST_FILE)
1701 return bsd_attr_list(0, arg, list, size);
1702 #elif defined(HAVE_ATTR_LIST) && defined(HAVE_SYS_ATTRIBUTES_H)
1703 return irix_attr_list(path, 0, list, size, 0);
1704 #elif defined(HAVE_ATTROPEN)
1706 int attrdirfd = solaris_attropen(path, ".", O_RDONLY, 0);
1707 if (attrdirfd >= 0) {
1708 ret = solaris_list_xattr(attrdirfd, list, size);
1718 ssize_t sys_llistxattr (const char *path, char *list, size_t size)
1720 #if defined(HAVE_LLISTXATTR)
1721 return llistxattr(path, list, size);
1722 #elif defined(HAVE_LISTXATTR) && defined(XATTR_ADD_OPT)
1723 int options = XATTR_NOFOLLOW;
1724 return listxattr(path, list, size, options);
1725 #elif defined(HAVE_LLISTEA)
1726 return llistea(path, list, size);
1727 #elif defined(HAVE_EXTATTR_LIST_LINK)
1730 return bsd_attr_list(1, arg, list, size);
1731 #elif defined(HAVE_ATTR_LIST) && defined(HAVE_SYS_ATTRIBUTES_H)
1732 return irix_attr_list(path, 0, list, size, ATTR_DONTFOLLOW);
1733 #elif defined(HAVE_ATTROPEN)
1735 int attrdirfd = solaris_attropen(path, ".", O_RDONLY|AT_SYMLINK_NOFOLLOW, 0);
1736 if (attrdirfd >= 0) {
1737 ret = solaris_list_xattr(attrdirfd, list, size);
1747 ssize_t sys_flistxattr (int filedes, char *list, size_t size)
1749 #if defined(HAVE_FLISTXATTR)
1750 #ifndef XATTR_ADD_OPT
1751 return flistxattr(filedes, list, size);
1754 return flistxattr(filedes, list, size, options);
1756 #elif defined(HAVE_FLISTEA)
1757 return flistea(filedes, list, size);
1758 #elif defined(HAVE_EXTATTR_LIST_FD)
1760 arg.filedes = filedes;
1761 return bsd_attr_list(2, arg, list, size);
1762 #elif defined(HAVE_ATTR_LISTF)
1763 return irix_attr_list(NULL, filedes, list, size, 0);
1764 #elif defined(HAVE_ATTROPEN)
1766 int attrdirfd = solaris_openat(filedes, ".", O_RDONLY|O_XATTR, 0);
1767 if (attrdirfd >= 0) {
1768 ret = solaris_list_xattr(attrdirfd, list, size);
1778 int sys_removexattr (const char *path, const char *name)
1780 #if defined(HAVE_REMOVEXATTR)
1781 #ifndef XATTR_ADD_OPT
1782 return removexattr(path, name);
1785 return removexattr(path, name, options);
1787 #elif defined(HAVE_REMOVEEA)
1788 return removeea(path, name);
1789 #elif defined(HAVE_EXTATTR_DELETE_FILE)
1791 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1792 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1793 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1795 return extattr_delete_file(path, attrnamespace, attrname);
1796 #elif defined(HAVE_ATTR_REMOVE)
1798 char *attrname = strchr(name,'.') + 1;
1800 if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
1802 return attr_remove(path, attrname, flags);
1803 #elif defined(HAVE_ATTROPEN)
1805 int attrdirfd = solaris_attropen(path, ".", O_RDONLY, 0);
1806 if (attrdirfd >= 0) {
1807 ret = solaris_unlinkat(attrdirfd, name);
1817 int sys_lremovexattr (const char *path, const char *name)
1819 #if defined(HAVE_LREMOVEXATTR)
1820 return lremovexattr(path, name);
1821 #elif defined(HAVE_REMOVEXATTR) && defined(XATTR_ADD_OPT)
1822 int options = XATTR_NOFOLLOW;
1823 return removexattr(path, name, options);
1824 #elif defined(HAVE_LREMOVEEA)
1825 return lremoveea(path, name);
1826 #elif defined(HAVE_EXTATTR_DELETE_LINK)
1828 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1829 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1830 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1832 return extattr_delete_link(path, attrnamespace, attrname);
1833 #elif defined(HAVE_ATTR_REMOVE)
1834 int flags = ATTR_DONTFOLLOW;
1835 char *attrname = strchr(name,'.') + 1;
1837 if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
1839 return attr_remove(path, attrname, flags);
1840 #elif defined(HAVE_ATTROPEN)
1842 int attrdirfd = solaris_attropen(path, ".", O_RDONLY|AT_SYMLINK_NOFOLLOW, 0);
1843 if (attrdirfd >= 0) {
1844 ret = solaris_unlinkat(attrdirfd, name);
1854 int sys_fremovexattr (int filedes, const char *name)
1856 #if defined(HAVE_FREMOVEXATTR)
1857 #ifndef XATTR_ADD_OPT
1858 return fremovexattr(filedes, name);
1861 return fremovexattr(filedes, name, options);
1863 #elif defined(HAVE_FREMOVEEA)
1864 return fremoveea(filedes, name);
1865 #elif defined(HAVE_EXTATTR_DELETE_FD)
1867 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1868 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1869 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1871 return extattr_delete_fd(filedes, attrnamespace, attrname);
1872 #elif defined(HAVE_ATTR_REMOVEF)
1874 char *attrname = strchr(name,'.') + 1;
1876 if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
1878 return attr_removef(filedes, attrname, flags);
1879 #elif defined(HAVE_ATTROPEN)
1881 int attrdirfd = solaris_openat(filedes, ".", O_RDONLY|O_XATTR, 0);
1882 if (attrdirfd >= 0) {
1883 ret = solaris_unlinkat(attrdirfd, name);
1893 int sys_setxattr (const char *path, const char *name, const void *value, size_t size, int flags)
1895 #if defined(HAVE_SETXATTR)
1896 #ifndef XATTR_ADD_OPT
1897 return setxattr(path, name, value, size, flags);
1900 return setxattr(path, name, value, size, 0, options);
1902 #elif defined(HAVE_SETEA)
1903 return setea(path, name, value, size, flags);
1904 #elif defined(HAVE_EXTATTR_SET_FILE)
1907 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1908 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1909 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1911 /* Check attribute existence */
1912 retval = extattr_get_file(path, attrnamespace, attrname, NULL, 0);
1914 /* REPLACE attribute, that doesn't exist */
1915 if (flags & XATTR_REPLACE && errno == ENOATTR) {
1919 /* Ignore other errors */
1922 /* CREATE attribute, that already exists */
1923 if (flags & XATTR_CREATE) {
1929 retval = extattr_set_file(path, attrnamespace, attrname, value, size);
1930 return (retval < 0) ? -1 : 0;
1931 #elif defined(HAVE_ATTR_SET)
1933 char *attrname = strchr(name,'.') + 1;
1935 if (strncmp(name, "system", 6) == 0) myflags |= ATTR_ROOT;
1936 if (flags & XATTR_CREATE) myflags |= ATTR_CREATE;
1937 if (flags & XATTR_REPLACE) myflags |= ATTR_REPLACE;
1939 return attr_set(path, attrname, (const char *)value, size, myflags);
1940 #elif defined(HAVE_ATTROPEN)
1942 int myflags = O_RDWR;
1944 if (flags & XATTR_CREATE) myflags |= O_EXCL;
1945 if (!(flags & XATTR_REPLACE)) myflags |= O_CREAT;
1946 attrfd = solaris_attropen(path, name, myflags, (mode_t) SOLARIS_ATTRMODE);
1948 ret = solaris_write_xattr(attrfd, value, size);
1958 int sys_lsetxattr (const char *path, const char *name, const void *value, size_t size, int flags)
1960 #if defined(HAVE_LSETXATTR)
1961 return lsetxattr(path, name, value, size, flags);
1962 #elif defined(HAVE_SETXATTR) && defined(XATTR_ADD_OPT)
1963 int options = XATTR_NOFOLLOW;
1964 return setxattr(path, name, value, size, 0, options);
1965 #elif defined(LSETEA)
1966 return lsetea(path, name, value, size, flags);
1967 #elif defined(HAVE_EXTATTR_SET_LINK)
1970 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1971 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1972 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1974 /* Check attribute existence */
1975 retval = extattr_get_link(path, attrnamespace, attrname, NULL, 0);
1977 /* REPLACE attribute, that doesn't exist */
1978 if (flags & XATTR_REPLACE && errno == ENOATTR) {
1982 /* Ignore other errors */
1985 /* CREATE attribute, that already exists */
1986 if (flags & XATTR_CREATE) {
1993 retval = extattr_set_link(path, attrnamespace, attrname, value, size);
1994 return (retval < 0) ? -1 : 0;
1995 #elif defined(HAVE_ATTR_SET)
1996 int myflags = ATTR_DONTFOLLOW;
1997 char *attrname = strchr(name,'.') + 1;
1999 if (strncmp(name, "system", 6) == 0) myflags |= ATTR_ROOT;
2000 if (flags & XATTR_CREATE) myflags |= ATTR_CREATE;
2001 if (flags & XATTR_REPLACE) myflags |= ATTR_REPLACE;
2003 return attr_set(path, attrname, (const char *)value, size, myflags);
2004 #elif defined(HAVE_ATTROPEN)
2006 int myflags = O_RDWR | AT_SYMLINK_NOFOLLOW;
2008 if (flags & XATTR_CREATE) myflags |= O_EXCL;
2009 if (!(flags & XATTR_REPLACE)) myflags |= O_CREAT;
2010 attrfd = solaris_attropen(path, name, myflags, (mode_t) SOLARIS_ATTRMODE);
2012 ret = solaris_write_xattr(attrfd, value, size);
2022 int sys_fsetxattr (int filedes, const char *name, const void *value, size_t size, int flags)
2024 #if defined(HAVE_FSETXATTR)
2025 #ifndef XATTR_ADD_OPT
2026 return fsetxattr(filedes, name, value, size, flags);
2029 return fsetxattr(filedes, name, value, size, 0, options);
2031 #elif defined(HAVE_FSETEA)
2032 return fsetea(filedes, name, value, size, flags);
2033 #elif defined(HAVE_EXTATTR_SET_FD)
2036 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
2037 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
2038 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
2040 /* Check attribute existence */
2041 retval = extattr_get_fd(filedes, attrnamespace, attrname, NULL, 0);
2043 /* REPLACE attribute, that doesn't exist */
2044 if (flags & XATTR_REPLACE && errno == ENOATTR) {
2048 /* Ignore other errors */
2051 /* CREATE attribute, that already exists */
2052 if (flags & XATTR_CREATE) {
2058 retval = extattr_set_fd(filedes, attrnamespace, attrname, value, size);
2059 return (retval < 0) ? -1 : 0;
2060 #elif defined(HAVE_ATTR_SETF)
2062 char *attrname = strchr(name,'.') + 1;
2064 if (strncmp(name, "system", 6) == 0) myflags |= ATTR_ROOT;
2065 if (flags & XATTR_CREATE) myflags |= ATTR_CREATE;
2066 if (flags & XATTR_REPLACE) myflags |= ATTR_REPLACE;
2068 return attr_setf(filedes, attrname, (const char *)value, size, myflags);
2069 #elif defined(HAVE_ATTROPEN)
2071 int myflags = O_RDWR | O_XATTR;
2073 if (flags & XATTR_CREATE) myflags |= O_EXCL;
2074 if (!(flags & XATTR_REPLACE)) myflags |= O_CREAT;
2075 attrfd = solaris_openat(filedes, name, myflags, (mode_t) SOLARIS_ATTRMODE);
2077 ret = solaris_write_xattr(attrfd, value, size);
2087 /**************************************************************************
2088 helper functions for Solaris' EA support
2089 ****************************************************************************/
2090 #ifdef HAVE_ATTROPEN
2091 static ssize_t solaris_read_xattr(int attrfd, void *value, size_t size)
2095 if (fstat(attrfd, &sbuf) == -1) {
2100 /* This is to return the current size of the named extended attribute */
2102 return sbuf.st_size;
2105 /* check size and read xattr */
2106 if (sbuf.st_size > size) {
2111 return read(attrfd, value, sbuf.st_size);
2114 static ssize_t solaris_list_xattr(int attrdirfd, char *list, size_t size)
2119 int newfd = dup(attrdirfd);
2120 /* CAUTION: The originating file descriptor should not be
2121 used again following the call to fdopendir().
2122 For that reason we dup() the file descriptor
2123 here to make things more clear. */
2124 dirp = fdopendir(newfd);
2126 while ((de = readdir(dirp))) {
2127 size_t listlen = strlen(de->d_name) + 1;
2128 if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) {
2129 /* we don't want "." and ".." here: */
2130 DEBUG(10,("skipped EA %s\n",de->d_name));
2135 /* return the current size of the list of extended attribute names*/
2138 /* check size and copy entrieѕ + nul into list. */
2139 if ((len + listlen) > size) {
2144 strlcpy(list + len, de->d_name, listlen);
2150 if (closedir(dirp) == -1) {
2151 DEBUG(0,("closedir dirp failed: %s\n",strerror(errno)));
2157 static int solaris_unlinkat(int attrdirfd, const char *name)
2159 if (unlinkat(attrdirfd, name, 0) == -1) {
2160 if (errno == ENOENT) {
2168 static int solaris_attropen(const char *path, const char *attrpath, int oflag, mode_t mode)
2170 int filedes = attropen(path, attrpath, oflag, mode);
2171 if (filedes == -1) {
2172 DEBUG(10,("attropen FAILED: path: %s, name: %s, errno: %s\n",path,attrpath,strerror(errno)));
2173 if (errno == EINVAL) {
2182 static int solaris_openat(int fildes, const char *path, int oflag, mode_t mode)
2184 int filedes = openat(fildes, path, oflag, mode);
2185 if (filedes == -1) {
2186 DEBUG(10,("openat FAILED: fd: %d, path: %s, errno: %s\n",filedes,path,strerror(errno)));
2187 if (errno == EINVAL) {
2196 static int solaris_write_xattr(int attrfd, const char *value, size_t size)
2198 if ((ftruncate(attrfd, 0) == 0) && (write(attrfd, value, size) == size)) {
2201 DEBUG(10,("solaris_write_xattr FAILED!\n"));
2205 #endif /*HAVE_ATTROPEN*/
2208 /****************************************************************************
2209 Return the major devicenumber for UNIX extensions.
2210 ****************************************************************************/
2212 uint32 unix_dev_major(SMB_DEV_T dev)
2214 #if defined(HAVE_DEVICE_MAJOR_FN)
2215 return (uint32)major(dev);
2217 return (uint32)(dev >> 8);
2221 /****************************************************************************
2222 Return the minor devicenumber for UNIX extensions.
2223 ****************************************************************************/
2225 uint32 unix_dev_minor(SMB_DEV_T dev)
2227 #if defined(HAVE_DEVICE_MINOR_FN)
2228 return (uint32)minor(dev);
2230 return (uint32)(dev & 0xff);
2235 /*******************************************************************
2236 Return the number of CPUs.
2237 ********************************************************************/
2239 int sys_get_number_of_cores(void)
2243 #if defined(HAVE_SYSCONF)
2244 #if defined(_SC_NPROCESSORS_ONLN)
2245 ret = (int)sysconf(_SC_NPROCESSORS_ONLN);
2247 #if defined(_SC_NPROCESSORS_CONF)
2249 ret = (int)sysconf(_SC_NPROCESSORS_CONF);
2252 #elif defined(HAVE_SYSCTL) && defined(CTL_HW)
2254 unsigned int len = sizeof(ret);
2257 #if defined(HW_AVAILCPU)
2258 name[1] = HW_AVAILCPU;
2260 if (sysctl(name, 2, &ret, &len, NULL, 0) == -1) {
2264 #if defined(HW_NCPU)
2268 if (sysctl(nm, 2, &count, &len, NULL, 0) == -1) {
2281 #if defined(WITH_AIO)
2283 /*******************************************************************
2284 An aio_read wrapper.
2285 ********************************************************************/
2287 int sys_aio_read(SMB_STRUCT_AIOCB *aiocb)
2289 #if defined(HAVE_AIO_READ)
2290 return aio_read(aiocb);
2297 /*******************************************************************
2298 An aio_write wrapper.
2299 ********************************************************************/
2301 int sys_aio_write(SMB_STRUCT_AIOCB *aiocb)
2303 #if defined(HAVE_AIO_WRITE)
2304 return aio_write(aiocb);
2311 /*******************************************************************
2312 An aio_return wrapper.
2313 ********************************************************************/
2315 ssize_t sys_aio_return(SMB_STRUCT_AIOCB *aiocb)
2317 #if defined(HAVE_AIO_RETURN)
2318 return aio_return(aiocb);
2325 /*******************************************************************
2326 An aio_cancel wrapper.
2327 ********************************************************************/
2329 int sys_aio_cancel(int fd, SMB_STRUCT_AIOCB *aiocb)
2331 #if defined(HAVE_AIO_CANCEL)
2332 return aio_cancel(fd, aiocb);
2339 /*******************************************************************
2340 An aio_error wrapper.
2341 ********************************************************************/
2343 int sys_aio_error(const SMB_STRUCT_AIOCB *aiocb)
2345 #if defined(HAVE_AIO_ERROR)
2346 return aio_error(aiocb);
2353 /*******************************************************************
2354 An aio_fsync wrapper.
2355 ********************************************************************/
2357 int sys_aio_fsync(int op, SMB_STRUCT_AIOCB *aiocb)
2359 #if defined(HAVE_AIO_FSYNC)
2360 return aio_fsync(op, aiocb);
2367 /*******************************************************************
2368 An aio_fsync wrapper.
2369 ********************************************************************/
2371 int sys_aio_suspend(const SMB_STRUCT_AIOCB * const cblist[], int n, const struct timespec *timeout)
2373 #if defined(HAVE_AIO_FSYNC)
2374 return aio_suspend(cblist, n, timeout);
2380 #else /* !WITH_AIO */
2382 int sys_aio_read(SMB_STRUCT_AIOCB *aiocb)
2388 int sys_aio_write(SMB_STRUCT_AIOCB *aiocb)
2394 ssize_t sys_aio_return(SMB_STRUCT_AIOCB *aiocb)
2400 int sys_aio_cancel(int fd, SMB_STRUCT_AIOCB *aiocb)
2406 int sys_aio_error(const SMB_STRUCT_AIOCB *aiocb)
2412 int sys_aio_fsync(int op, SMB_STRUCT_AIOCB *aiocb)
2418 int sys_aio_suspend(const SMB_STRUCT_AIOCB * const cblist[], int n, const struct timespec *timeout)
2423 #endif /* WITH_AIO */