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 /*******************************************************************
621 An fdopendir wrapper.
622 Ugly hack - we need dirfd for this to work correctly in the
624 ********************************************************************/
626 DIR *sys_fdopendir(int fd)
628 #if defined(HAVE_FDOPENDIR) && defined(HAVE_DIRFD)
629 return fdopendir(fd);
636 /*******************************************************************
638 ********************************************************************/
640 int sys_mknod(const char *path, mode_t mode, SMB_DEV_T dev)
642 #if defined(HAVE_MKNOD)
643 return mknod(path, mode, dev);
645 /* No mknod system call. */
651 /*******************************************************************
652 The wait() calls vary between systems
653 ********************************************************************/
655 int sys_waitpid(pid_t pid,int *status,int options)
658 return waitpid(pid,status,options);
659 #else /* HAVE_WAITPID */
660 return wait4(pid, status, options, NULL);
661 #endif /* HAVE_WAITPID */
664 /*******************************************************************
665 System wrapper for getwd. Always returns MALLOC'ed memory, or NULL
666 on error (malloc fail usually).
667 ********************************************************************/
669 char *sys_getwd(void)
671 #ifdef GETCWD_TAKES_NULL
672 return getcwd(NULL, 0);
674 char *wd = NULL, *s = NULL;
675 size_t allocated = PATH_MAX;
678 s = SMB_REALLOC_ARRAY(s, char, allocated);
682 wd = getcwd(s, allocated);
686 if (errno != ERANGE) {
691 if (allocated < PATH_MAX) {
698 char *s = SMB_MALLOC_ARRAY(char, PATH_MAX);
706 #if defined(HAVE_POSIX_CAPABILITIES)
708 /**************************************************************************
709 Try and abstract process capabilities (for systems that have them).
710 ****************************************************************************/
712 /* Set the POSIX capabilities needed for the given purpose into the effective
713 * capability set of the current process. Make sure they are always removed
714 * from the inheritable set, because there is no circumstance in which our
715 * children should inherit our elevated privileges.
717 static bool set_process_capability(enum smbd_capability capability,
720 cap_value_t cap_vals[2] = {0};
721 int num_cap_vals = 0;
725 #if defined(HAVE_PRCTL) && defined(PR_GET_KEEPCAPS) && defined(PR_SET_KEEPCAPS)
726 /* On Linux, make sure that any capabilities we grab are sticky
727 * across UID changes. We expect that this would allow us to keep both
728 * the effective and permitted capability sets, but as of circa 2.6.16,
729 * only the permitted set is kept. It is a bug (which we work around)
730 * that the effective set is lost, but we still require the effective
733 if (!prctl(PR_GET_KEEPCAPS)) {
734 prctl(PR_SET_KEEPCAPS, 1);
738 cap = cap_get_proc();
740 DEBUG(0,("set_process_capability: cap_get_proc failed: %s\n",
745 switch (capability) {
746 case KERNEL_OPLOCK_CAPABILITY:
747 #ifdef CAP_NETWORK_MGT
748 /* IRIX has CAP_NETWORK_MGT for oplocks. */
749 cap_vals[num_cap_vals++] = CAP_NETWORK_MGT;
752 case DMAPI_ACCESS_CAPABILITY:
753 #ifdef CAP_DEVICE_MGT
754 /* IRIX has CAP_DEVICE_MGT for DMAPI access. */
755 cap_vals[num_cap_vals++] = CAP_DEVICE_MGT;
757 /* Linux has CAP_MKNOD for DMAPI access. */
758 cap_vals[num_cap_vals++] = CAP_MKNOD;
761 case LEASE_CAPABILITY:
763 cap_vals[num_cap_vals++] = CAP_LEASE;
768 SMB_ASSERT(num_cap_vals <= ARRAY_SIZE(cap_vals));
770 if (num_cap_vals == 0) {
775 cap_set_flag(cap, CAP_EFFECTIVE, num_cap_vals, cap_vals,
776 enable ? CAP_SET : CAP_CLEAR);
778 /* We never want to pass capabilities down to our children, so make
779 * sure they are not inherited.
781 cap_set_flag(cap, CAP_INHERITABLE, num_cap_vals, cap_vals, CAP_CLEAR);
783 if (cap_set_proc(cap) == -1) {
784 DEBUG(0, ("set_process_capability: cap_set_proc failed: %s\n",
794 #endif /* HAVE_POSIX_CAPABILITIES */
796 /****************************************************************************
797 Gain the oplock capability from the kernel if possible.
798 ****************************************************************************/
800 void set_effective_capability(enum smbd_capability capability)
802 #if defined(HAVE_POSIX_CAPABILITIES)
803 set_process_capability(capability, True);
804 #endif /* HAVE_POSIX_CAPABILITIES */
807 void drop_effective_capability(enum smbd_capability capability)
809 #if defined(HAVE_POSIX_CAPABILITIES)
810 set_process_capability(capability, False);
811 #endif /* HAVE_POSIX_CAPABILITIES */
814 /**************************************************************************
815 Wrapper for random().
816 ****************************************************************************/
818 long sys_random(void)
820 #if defined(HAVE_RANDOM)
821 return (long)random();
822 #elif defined(HAVE_RAND)
825 DEBUG(0,("Error - no random function available !\n"));
830 /**************************************************************************
831 Wrapper for srandom().
832 ****************************************************************************/
834 void sys_srandom(unsigned int seed)
836 #if defined(HAVE_SRANDOM)
838 #elif defined(HAVE_SRAND)
841 DEBUG(0,("Error - no srandom function available !\n"));
847 #define NGROUPS_MAX 32 /* Guess... */
850 /**************************************************************************
851 Returns equivalent to NGROUPS_MAX - using sysconf if needed.
852 ****************************************************************************/
856 #if defined(SYSCONF_SC_NGROUPS_MAX)
857 int ret = sysconf(_SC_NGROUPS_MAX);
858 return (ret == -1) ? NGROUPS_MAX : ret;
864 /**************************************************************************
865 Wrap setgroups and getgroups for systems that declare getgroups() as
866 returning an array of gid_t, but actuall return an array of int.
867 ****************************************************************************/
869 #if defined(HAVE_BROKEN_GETGROUPS)
871 #ifdef HAVE_BROKEN_GETGROUPS
877 static int sys_broken_getgroups(int setlen, gid_t *gidset)
884 return getgroups(setlen, &gid);
888 * Broken case. We need to allocate a
889 * GID_T array of size setlen.
898 setlen = groups_max();
900 if((group_list = SMB_MALLOC_ARRAY(GID_T, setlen)) == NULL) {
901 DEBUG(0,("sys_getgroups: Malloc fail.\n"));
905 if((ngroups = getgroups(setlen, group_list)) < 0) {
906 int saved_errno = errno;
907 SAFE_FREE(group_list);
912 for(i = 0; i < ngroups; i++)
913 gidset[i] = (gid_t)group_list[i];
915 SAFE_FREE(group_list);
919 static int sys_broken_setgroups(int setlen, gid_t *gidset)
927 if (setlen < 0 || setlen > groups_max()) {
933 * Broken case. We need to allocate a
934 * GID_T array of size setlen.
937 if((group_list = SMB_MALLOC_ARRAY(GID_T, setlen)) == NULL) {
938 DEBUG(0,("sys_setgroups: Malloc fail.\n"));
942 for(i = 0; i < setlen; i++)
943 group_list[i] = (GID_T) gidset[i];
945 if(setgroups(setlen, group_list) != 0) {
946 int saved_errno = errno;
947 SAFE_FREE(group_list);
952 SAFE_FREE(group_list);
956 #endif /* HAVE_BROKEN_GETGROUPS */
958 /* This is a list of systems that require the first GID passed to setgroups(2)
959 * to be the effective GID. If your system is one of these, add it here.
961 #if defined (FREEBSD) || defined (DARWINOS)
962 #define USE_BSD_SETGROUPS
965 #if defined(USE_BSD_SETGROUPS)
966 /* Depending on the particular BSD implementation, the first GID that is
967 * passed to setgroups(2) will either be ignored or will set the credential's
968 * effective GID. In either case, the right thing to do is to guarantee that
969 * gidset[0] is the effective GID.
971 static int sys_bsd_setgroups(gid_t primary_gid, int setlen, const gid_t *gidset)
973 gid_t *new_gidset = NULL;
977 /* setgroups(2) will fail with EINVAL if we pass too many groups. */
980 /* No group list, just make sure we are setting the efective GID. */
982 return setgroups(1, &primary_gid);
985 /* If the primary gid is not the first array element, grow the array
986 * and insert it at the front.
988 if (gidset[0] != primary_gid) {
989 new_gidset = SMB_MALLOC_ARRAY(gid_t, setlen + 1);
990 if (new_gidset == NULL) {
994 memcpy(new_gidset + 1, gidset, (setlen * sizeof(gid_t)));
995 new_gidset[0] = primary_gid;
1000 DEBUG(3, ("forced to truncate group list from %d to %d\n",
1005 #if defined(HAVE_BROKEN_GETGROUPS)
1006 ret = sys_broken_setgroups(setlen, new_gidset ? new_gidset : gidset);
1008 ret = setgroups(setlen, new_gidset ? new_gidset : gidset);
1013 SAFE_FREE(new_gidset);
1020 #endif /* USE_BSD_SETGROUPS */
1022 /**************************************************************************
1023 Wrapper for getgroups. Deals with broken (int) case.
1024 ****************************************************************************/
1026 int sys_getgroups(int setlen, gid_t *gidset)
1028 #if defined(HAVE_BROKEN_GETGROUPS)
1029 return sys_broken_getgroups(setlen, gidset);
1031 return getgroups(setlen, gidset);
1035 /**************************************************************************
1036 Wrapper for setgroups. Deals with broken (int) case and BSD case.
1037 ****************************************************************************/
1039 int sys_setgroups(gid_t UNUSED(primary_gid), int setlen, gid_t *gidset)
1041 #if !defined(HAVE_SETGROUPS)
1044 #endif /* HAVE_SETGROUPS */
1046 #if defined(USE_BSD_SETGROUPS)
1047 return sys_bsd_setgroups(primary_gid, setlen, gidset);
1048 #elif defined(HAVE_BROKEN_GETGROUPS)
1049 return sys_broken_setgroups(setlen, gidset);
1051 return setgroups(setlen, gidset);
1055 /**************************************************************************
1056 Extract a command into an arg list.
1057 ****************************************************************************/
1059 static char **extract_args(TALLOC_CTX *mem_ctx, const char *command)
1068 if (!(trunc_cmd = talloc_strdup(mem_ctx, command))) {
1069 DEBUG(0, ("talloc failed\n"));
1073 if(!(ptr = strtok_r(trunc_cmd, " \t", &saveptr))) {
1074 TALLOC_FREE(trunc_cmd);
1083 for( argcl = 1; ptr; ptr = strtok_r(NULL, " \t", &saveptr))
1086 TALLOC_FREE(trunc_cmd);
1088 if (!(argl = talloc_array(mem_ctx, char *, argcl + 1))) {
1093 * Now do the extraction.
1096 if (!(trunc_cmd = talloc_strdup(mem_ctx, command))) {
1100 ptr = strtok_r(trunc_cmd, " \t", &saveptr);
1103 if (!(argl[i++] = talloc_strdup(argl, ptr))) {
1107 while((ptr = strtok_r(NULL, " \t", &saveptr)) != NULL) {
1109 if (!(argl[i++] = talloc_strdup(argl, ptr))) {
1115 TALLOC_FREE(trunc_cmd);
1119 DEBUG(0, ("talloc failed\n"));
1120 TALLOC_FREE(trunc_cmd);
1126 /**************************************************************************
1127 Wrapper for popen. Safer as it doesn't search a path.
1128 Modified from the glibc sources.
1129 modified by tridge to return a file descriptor. We must kick our FILE* habit
1130 ****************************************************************************/
1132 typedef struct _popen_list
1136 struct _popen_list *next;
1139 static popen_list *popen_chain;
1141 int sys_popen(const char *command)
1143 int parent_end, child_end;
1145 popen_list *entry = NULL;
1148 if (pipe(pipe_fds) < 0)
1151 parent_end = pipe_fds[0];
1152 child_end = pipe_fds[1];
1159 if((entry = SMB_MALLOC_P(popen_list)) == NULL)
1162 ZERO_STRUCTP(entry);
1165 * Extract the command and args into a NULL terminated array.
1168 if(!(argl = extract_args(NULL, command)))
1171 entry->child_pid = fork();
1173 if (entry->child_pid == -1) {
1177 if (entry->child_pid == 0) {
1183 int child_std_end = STDOUT_FILENO;
1187 if (child_end != child_std_end) {
1188 dup2 (child_end, child_std_end);
1193 * POSIX.2: "popen() shall ensure that any streams from previous
1194 * popen() calls that remain open in the parent process are closed
1195 * in the new child process."
1198 for (p = popen_chain; p; p = p->next)
1201 execv(argl[0], argl);
1212 /* Link into popen_chain. */
1213 entry->next = popen_chain;
1214 popen_chain = entry;
1215 entry->fd = parent_end;
1228 /**************************************************************************
1229 Wrapper for pclose. Modified from the glibc sources.
1230 ****************************************************************************/
1232 int sys_pclose(int fd)
1235 popen_list **ptr = &popen_chain;
1236 popen_list *entry = NULL;
1240 /* Unlink from popen_chain. */
1241 for ( ; *ptr != NULL; ptr = &(*ptr)->next) {
1242 if ((*ptr)->fd == fd) {
1244 *ptr = (*ptr)->next;
1250 if (status < 0 || close(entry->fd) < 0)
1254 * As Samba is catching and eating child process
1255 * exits we don't really care about the child exit
1256 * code, a -1 with errno = ECHILD will do fine for us.
1260 wait_pid = sys_waitpid (entry->child_pid, &wstatus, 0);
1261 } while (wait_pid == -1 && errno == EINTR);
1270 /**************************************************************************
1271 Wrapper for Admin Logs.
1272 ****************************************************************************/
1274 void sys_adminlog(int priority, const char *format_str, ...)
1278 char *msgbuf = NULL;
1280 va_start( ap, format_str );
1281 ret = vasprintf( &msgbuf, format_str, ap );
1287 #if defined(HAVE_SYSLOG)
1288 syslog( priority, "%s", msgbuf );
1290 DEBUG(0,("%s", msgbuf ));
1295 /******** Solaris EA helper function prototypes ********/
1296 #ifdef HAVE_ATTROPEN
1297 #define SOLARIS_ATTRMODE S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP
1298 static int solaris_write_xattr(int attrfd, const char *value, size_t size);
1299 static ssize_t solaris_read_xattr(int attrfd, void *value, size_t size);
1300 static ssize_t solaris_list_xattr(int attrdirfd, char *list, size_t size);
1301 static int solaris_unlinkat(int attrdirfd, const char *name);
1302 static int solaris_attropen(const char *path, const char *attrpath, int oflag, mode_t mode);
1303 static int solaris_openat(int fildes, const char *path, int oflag, mode_t mode);
1306 /**************************************************************************
1307 Wrappers for extented attribute calls. Based on the Linux package with
1308 support for IRIX and (Net|Free)BSD also. Expand as other systems have them.
1309 ****************************************************************************/
1311 ssize_t sys_getxattr (const char *path, const char *name, void *value, size_t size)
1313 #if defined(HAVE_GETXATTR)
1314 #ifndef XATTR_ADD_OPT
1315 return getxattr(path, name, value, size);
1318 return getxattr(path, name, value, size, 0, options);
1320 #elif defined(HAVE_GETEA)
1321 return getea(path, name, value, size);
1322 #elif defined(HAVE_EXTATTR_GET_FILE)
1325 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1326 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1327 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1329 * The BSD implementation has a nasty habit of silently truncating
1330 * the returned value to the size of the buffer, so we have to check
1331 * that the buffer is large enough to fit the returned value.
1333 if((retval=extattr_get_file(path, attrnamespace, attrname, NULL, 0)) >= 0) {
1338 if((retval=extattr_get_file(path, attrnamespace, attrname, value, size)) >= 0)
1342 DEBUG(10,("sys_getxattr: extattr_get_file() failed with: %s\n", strerror(errno)));
1344 #elif defined(HAVE_ATTR_GET)
1345 int retval, flags = 0;
1346 int valuelength = (int)size;
1347 char *attrname = strchr(name,'.') + 1;
1349 if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
1351 retval = attr_get(path, attrname, (char *)value, &valuelength, flags);
1353 return retval ? retval : valuelength;
1354 #elif defined(HAVE_ATTROPEN)
1356 int attrfd = solaris_attropen(path, name, O_RDONLY, 0);
1358 ret = solaris_read_xattr(attrfd, value, size);
1368 ssize_t sys_fgetxattr (int filedes, const char *name, void *value, size_t size)
1370 #if defined(HAVE_FGETXATTR)
1371 #ifndef XATTR_ADD_OPT
1372 return fgetxattr(filedes, name, value, size);
1375 return fgetxattr(filedes, name, value, size, 0, options);
1377 #elif defined(HAVE_FGETEA)
1378 return fgetea(filedes, name, value, size);
1379 #elif defined(HAVE_EXTATTR_GET_FD)
1382 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1383 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1384 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1386 if((retval=extattr_get_fd(filedes, attrnamespace, attrname, NULL, 0)) >= 0) {
1391 if((retval=extattr_get_fd(filedes, attrnamespace, attrname, value, size)) >= 0)
1395 DEBUG(10,("sys_fgetxattr: extattr_get_fd() failed with: %s\n", strerror(errno)));
1397 #elif defined(HAVE_ATTR_GETF)
1398 int retval, flags = 0;
1399 int valuelength = (int)size;
1400 char *attrname = strchr(name,'.') + 1;
1402 if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
1404 retval = attr_getf(filedes, attrname, (char *)value, &valuelength, flags);
1406 return retval ? retval : valuelength;
1407 #elif defined(HAVE_ATTROPEN)
1409 int attrfd = solaris_openat(filedes, name, O_RDONLY|O_XATTR, 0);
1411 ret = solaris_read_xattr(attrfd, value, size);
1421 #if defined(HAVE_EXTATTR_LIST_FILE)
1423 #define EXTATTR_PREFIX(s) (s), (sizeof((s))-1)
1431 { EXTATTR_NAMESPACE_SYSTEM, EXTATTR_PREFIX("system.") },
1432 { EXTATTR_NAMESPACE_USER, EXTATTR_PREFIX("user.") },
1440 static ssize_t bsd_attr_list (int type, extattr_arg arg, char *list, size_t size)
1442 ssize_t list_size, total_size = 0;
1445 /* Iterate through extattr(2) namespaces */
1446 for(t = 0; t < ARRAY_SIZE(extattr); t++) {
1448 #if defined(HAVE_EXTATTR_LIST_FILE)
1450 list_size = extattr_list_file(arg.path, extattr[t].space, list, size);
1453 #if defined(HAVE_EXTATTR_LIST_LINK)
1455 list_size = extattr_list_link(arg.path, extattr[t].space, list, size);
1458 #if defined(HAVE_EXTATTR_LIST_FD)
1460 list_size = extattr_list_fd(arg.filedes, extattr[t].space, list, size);
1467 /* Some error happend. Errno should be set by the previous call */
1473 /* XXX: Call with an empty buffer may be used to calculate
1474 necessary buffer size. Unfortunately, we can't say, how
1475 many attributes were returned, so here is the potential
1476 problem with the emulation.
1479 /* Take the worse case of one char attribute names -
1480 two bytes per name plus one more for sanity.
1482 total_size += list_size + (list_size/2 + 1)*extattr[t].len;
1485 /* Count necessary offset to fit namespace prefixes */
1487 for(i = 0; i < list_size; i += list[i] + 1)
1488 len += extattr[t].len;
1490 total_size += list_size + len;
1491 /* Buffer is too small to fit the results */
1492 if(total_size > size) {
1496 /* Shift results back, so we can prepend prefixes */
1497 buf = (char *)memmove(list + len, list, list_size);
1499 for(i = 0; i < list_size; i += len + 1) {
1501 strncpy(list, extattr[t].name, extattr[t].len + 1);
1502 list += extattr[t].len;
1503 strncpy(list, buf + i + 1, len);
1514 #if defined(HAVE_ATTR_LIST) && defined(HAVE_SYS_ATTRIBUTES_H)
1515 static char attr_buffer[ATTR_MAX_VALUELEN];
1517 static ssize_t irix_attr_list(const char *path, int filedes, char *list, size_t size, int flags)
1519 int retval = 0, index;
1520 attrlist_cursor_t *cursor = 0;
1522 attrlist_t * al = (attrlist_t *)attr_buffer;
1524 size_t ent_size, left = size;
1529 retval = attr_listf(filedes, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
1531 retval = attr_list(path, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
1533 for (index = 0; index < al->al_count; index++) {
1534 ae = ATTR_ENTRY(attr_buffer, index);
1535 ent_size = strlen(ae->a_name) + sizeof("user.");
1536 if (left >= ent_size) {
1537 strncpy(bp, "user.", sizeof("user."));
1538 strncat(bp, ae->a_name, ent_size - sizeof("user."));
1546 total_size += ent_size;
1548 if (al->al_more == 0) break;
1555 retval = attr_listf(filedes, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
1557 retval = attr_list(path, attr_buffer, ATTR_MAX_VALUELEN, flags, cursor);
1559 for (index = 0; index < al->al_count; index++) {
1560 ae = ATTR_ENTRY(attr_buffer, index);
1561 ent_size = strlen(ae->a_name) + sizeof("system.");
1562 if (left >= ent_size) {
1563 strncpy(bp, "system.", sizeof("system."));
1564 strncat(bp, ae->a_name, ent_size - sizeof("system."));
1572 total_size += ent_size;
1574 if (al->al_more == 0) break;
1577 return (ssize_t)(retval ? retval : total_size);
1582 ssize_t sys_listxattr (const char *path, char *list, size_t size)
1584 #if defined(HAVE_LISTXATTR)
1585 #ifndef XATTR_ADD_OPT
1586 return listxattr(path, list, size);
1589 return listxattr(path, list, size, options);
1591 #elif defined(HAVE_LISTEA)
1592 return listea(path, list, size);
1593 #elif defined(HAVE_EXTATTR_LIST_FILE)
1596 return bsd_attr_list(0, arg, list, size);
1597 #elif defined(HAVE_ATTR_LIST) && defined(HAVE_SYS_ATTRIBUTES_H)
1598 return irix_attr_list(path, 0, list, size, 0);
1599 #elif defined(HAVE_ATTROPEN)
1601 int attrdirfd = solaris_attropen(path, ".", O_RDONLY, 0);
1602 if (attrdirfd >= 0) {
1603 ret = solaris_list_xattr(attrdirfd, list, size);
1613 ssize_t sys_flistxattr (int filedes, char *list, size_t size)
1615 #if defined(HAVE_FLISTXATTR)
1616 #ifndef XATTR_ADD_OPT
1617 return flistxattr(filedes, list, size);
1620 return flistxattr(filedes, list, size, options);
1622 #elif defined(HAVE_FLISTEA)
1623 return flistea(filedes, list, size);
1624 #elif defined(HAVE_EXTATTR_LIST_FD)
1626 arg.filedes = filedes;
1627 return bsd_attr_list(2, arg, list, size);
1628 #elif defined(HAVE_ATTR_LISTF)
1629 return irix_attr_list(NULL, filedes, list, size, 0);
1630 #elif defined(HAVE_ATTROPEN)
1632 int attrdirfd = solaris_openat(filedes, ".", O_RDONLY|O_XATTR, 0);
1633 if (attrdirfd >= 0) {
1634 ret = solaris_list_xattr(attrdirfd, list, size);
1644 int sys_removexattr (const char *path, const char *name)
1646 #if defined(HAVE_REMOVEXATTR)
1647 #ifndef XATTR_ADD_OPT
1648 return removexattr(path, name);
1651 return removexattr(path, name, options);
1653 #elif defined(HAVE_REMOVEEA)
1654 return removeea(path, name);
1655 #elif defined(HAVE_EXTATTR_DELETE_FILE)
1657 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1658 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1659 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1661 return extattr_delete_file(path, attrnamespace, attrname);
1662 #elif defined(HAVE_ATTR_REMOVE)
1664 char *attrname = strchr(name,'.') + 1;
1666 if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
1668 return attr_remove(path, attrname, flags);
1669 #elif defined(HAVE_ATTROPEN)
1671 int attrdirfd = solaris_attropen(path, ".", O_RDONLY, 0);
1672 if (attrdirfd >= 0) {
1673 ret = solaris_unlinkat(attrdirfd, name);
1683 int sys_lremovexattr (const char *path, const char *name)
1685 #if defined(HAVE_LREMOVEXATTR)
1686 return lremovexattr(path, name);
1687 #elif defined(HAVE_REMOVEXATTR) && defined(XATTR_ADD_OPT)
1688 int options = XATTR_NOFOLLOW;
1689 return removexattr(path, name, options);
1690 #elif defined(HAVE_LREMOVEEA)
1691 return lremoveea(path, name);
1692 #elif defined(HAVE_EXTATTR_DELETE_LINK)
1694 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1695 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1696 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1698 return extattr_delete_link(path, attrnamespace, attrname);
1699 #elif defined(HAVE_ATTR_REMOVE)
1700 int flags = ATTR_DONTFOLLOW;
1701 char *attrname = strchr(name,'.') + 1;
1703 if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
1705 return attr_remove(path, attrname, flags);
1706 #elif defined(HAVE_ATTROPEN)
1708 int attrdirfd = solaris_attropen(path, ".", O_RDONLY|AT_SYMLINK_NOFOLLOW, 0);
1709 if (attrdirfd >= 0) {
1710 ret = solaris_unlinkat(attrdirfd, name);
1720 int sys_fremovexattr (int filedes, const char *name)
1722 #if defined(HAVE_FREMOVEXATTR)
1723 #ifndef XATTR_ADD_OPT
1724 return fremovexattr(filedes, name);
1727 return fremovexattr(filedes, name, options);
1729 #elif defined(HAVE_FREMOVEEA)
1730 return fremoveea(filedes, name);
1731 #elif defined(HAVE_EXTATTR_DELETE_FD)
1733 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1734 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1735 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1737 return extattr_delete_fd(filedes, attrnamespace, attrname);
1738 #elif defined(HAVE_ATTR_REMOVEF)
1740 char *attrname = strchr(name,'.') + 1;
1742 if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
1744 return attr_removef(filedes, attrname, flags);
1745 #elif defined(HAVE_ATTROPEN)
1747 int attrdirfd = solaris_openat(filedes, ".", O_RDONLY|O_XATTR, 0);
1748 if (attrdirfd >= 0) {
1749 ret = solaris_unlinkat(attrdirfd, name);
1759 int sys_setxattr (const char *path, const char *name, const void *value, size_t size, int flags)
1761 #if defined(HAVE_SETXATTR)
1762 #ifndef XATTR_ADD_OPT
1763 return setxattr(path, name, value, size, flags);
1766 return setxattr(path, name, value, size, 0, options);
1768 #elif defined(HAVE_SETEA)
1769 return setea(path, name, value, size, flags);
1770 #elif defined(HAVE_EXTATTR_SET_FILE)
1773 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1774 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1775 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1777 /* Check attribute existence */
1778 retval = extattr_get_file(path, attrnamespace, attrname, NULL, 0);
1780 /* REPLACE attribute, that doesn't exist */
1781 if (flags & XATTR_REPLACE && errno == ENOATTR) {
1785 /* Ignore other errors */
1788 /* CREATE attribute, that already exists */
1789 if (flags & XATTR_CREATE) {
1795 retval = extattr_set_file(path, attrnamespace, attrname, value, size);
1796 return (retval < 0) ? -1 : 0;
1797 #elif defined(HAVE_ATTR_SET)
1799 char *attrname = strchr(name,'.') + 1;
1801 if (strncmp(name, "system", 6) == 0) myflags |= ATTR_ROOT;
1802 if (flags & XATTR_CREATE) myflags |= ATTR_CREATE;
1803 if (flags & XATTR_REPLACE) myflags |= ATTR_REPLACE;
1805 return attr_set(path, attrname, (const char *)value, size, myflags);
1806 #elif defined(HAVE_ATTROPEN)
1808 int myflags = O_RDWR;
1810 if (flags & XATTR_CREATE) myflags |= O_EXCL;
1811 if (!(flags & XATTR_REPLACE)) myflags |= O_CREAT;
1812 attrfd = solaris_attropen(path, name, myflags, (mode_t) SOLARIS_ATTRMODE);
1814 ret = solaris_write_xattr(attrfd, value, size);
1824 int sys_lsetxattr (const char *path, const char *name, const void *value, size_t size, int flags)
1826 #if defined(HAVE_LSETXATTR)
1827 return lsetxattr(path, name, value, size, flags);
1828 #elif defined(HAVE_SETXATTR) && defined(XATTR_ADD_OPT)
1829 int options = XATTR_NOFOLLOW;
1830 return setxattr(path, name, value, size, 0, options);
1831 #elif defined(LSETEA)
1832 return lsetea(path, name, value, size, flags);
1833 #elif defined(HAVE_EXTATTR_SET_LINK)
1836 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1837 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1838 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1840 /* Check attribute existence */
1841 retval = extattr_get_link(path, attrnamespace, attrname, NULL, 0);
1843 /* REPLACE attribute, that doesn't exist */
1844 if (flags & XATTR_REPLACE && errno == ENOATTR) {
1848 /* Ignore other errors */
1851 /* CREATE attribute, that already exists */
1852 if (flags & XATTR_CREATE) {
1859 retval = extattr_set_link(path, attrnamespace, attrname, value, size);
1860 return (retval < 0) ? -1 : 0;
1861 #elif defined(HAVE_ATTR_SET)
1862 int myflags = ATTR_DONTFOLLOW;
1863 char *attrname = strchr(name,'.') + 1;
1865 if (strncmp(name, "system", 6) == 0) myflags |= ATTR_ROOT;
1866 if (flags & XATTR_CREATE) myflags |= ATTR_CREATE;
1867 if (flags & XATTR_REPLACE) myflags |= ATTR_REPLACE;
1869 return attr_set(path, attrname, (const char *)value, size, myflags);
1870 #elif defined(HAVE_ATTROPEN)
1872 int myflags = O_RDWR | AT_SYMLINK_NOFOLLOW;
1874 if (flags & XATTR_CREATE) myflags |= O_EXCL;
1875 if (!(flags & XATTR_REPLACE)) myflags |= O_CREAT;
1876 attrfd = solaris_attropen(path, name, myflags, (mode_t) SOLARIS_ATTRMODE);
1878 ret = solaris_write_xattr(attrfd, value, size);
1888 int sys_fsetxattr (int filedes, const char *name, const void *value, size_t size, int flags)
1890 #if defined(HAVE_FSETXATTR)
1891 #ifndef XATTR_ADD_OPT
1892 return fsetxattr(filedes, name, value, size, flags);
1895 return fsetxattr(filedes, name, value, size, 0, options);
1897 #elif defined(HAVE_FSETEA)
1898 return fsetea(filedes, name, value, size, flags);
1899 #elif defined(HAVE_EXTATTR_SET_FD)
1902 int attrnamespace = (strncmp(name, "system", 6) == 0) ?
1903 EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
1904 const char *attrname = ((s=strchr_m(name, '.')) == NULL) ? name : s + 1;
1906 /* Check attribute existence */
1907 retval = extattr_get_fd(filedes, attrnamespace, attrname, NULL, 0);
1909 /* REPLACE attribute, that doesn't exist */
1910 if (flags & XATTR_REPLACE && errno == ENOATTR) {
1914 /* Ignore other errors */
1917 /* CREATE attribute, that already exists */
1918 if (flags & XATTR_CREATE) {
1924 retval = extattr_set_fd(filedes, attrnamespace, attrname, value, size);
1925 return (retval < 0) ? -1 : 0;
1926 #elif defined(HAVE_ATTR_SETF)
1928 char *attrname = strchr(name,'.') + 1;
1930 if (strncmp(name, "system", 6) == 0) myflags |= ATTR_ROOT;
1931 if (flags & XATTR_CREATE) myflags |= ATTR_CREATE;
1932 if (flags & XATTR_REPLACE) myflags |= ATTR_REPLACE;
1934 return attr_setf(filedes, attrname, (const char *)value, size, myflags);
1935 #elif defined(HAVE_ATTROPEN)
1937 int myflags = O_RDWR | O_XATTR;
1939 if (flags & XATTR_CREATE) myflags |= O_EXCL;
1940 if (!(flags & XATTR_REPLACE)) myflags |= O_CREAT;
1941 attrfd = solaris_openat(filedes, name, myflags, (mode_t) SOLARIS_ATTRMODE);
1943 ret = solaris_write_xattr(attrfd, value, size);
1953 /**************************************************************************
1954 helper functions for Solaris' EA support
1955 ****************************************************************************/
1956 #ifdef HAVE_ATTROPEN
1957 static ssize_t solaris_read_xattr(int attrfd, void *value, size_t size)
1961 if (fstat(attrfd, &sbuf) == -1) {
1966 /* This is to return the current size of the named extended attribute */
1968 return sbuf.st_size;
1971 /* check size and read xattr */
1972 if (sbuf.st_size > size) {
1977 return read(attrfd, value, sbuf.st_size);
1980 static ssize_t solaris_list_xattr(int attrdirfd, char *list, size_t size)
1985 int newfd = dup(attrdirfd);
1986 /* CAUTION: The originating file descriptor should not be
1987 used again following the call to fdopendir().
1988 For that reason we dup() the file descriptor
1989 here to make things more clear. */
1990 dirp = fdopendir(newfd);
1992 while ((de = readdir(dirp))) {
1993 size_t listlen = strlen(de->d_name) + 1;
1994 if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) {
1995 /* we don't want "." and ".." here: */
1996 DEBUG(10,("skipped EA %s\n",de->d_name));
2001 /* return the current size of the list of extended attribute names*/
2004 /* check size and copy entrieѕ + nul into list. */
2005 if ((len + listlen) > size) {
2010 strlcpy(list + len, de->d_name, listlen);
2016 if (closedir(dirp) == -1) {
2017 DEBUG(0,("closedir dirp failed: %s\n",strerror(errno)));
2023 static int solaris_unlinkat(int attrdirfd, const char *name)
2025 if (unlinkat(attrdirfd, name, 0) == -1) {
2026 if (errno == ENOENT) {
2034 static int solaris_attropen(const char *path, const char *attrpath, int oflag, mode_t mode)
2036 int filedes = attropen(path, attrpath, oflag, mode);
2037 if (filedes == -1) {
2038 DEBUG(10,("attropen FAILED: path: %s, name: %s, errno: %s\n",path,attrpath,strerror(errno)));
2039 if (errno == EINVAL) {
2048 static int solaris_openat(int fildes, const char *path, int oflag, mode_t mode)
2050 int filedes = openat(fildes, path, oflag, mode);
2051 if (filedes == -1) {
2052 DEBUG(10,("openat FAILED: fd: %d, path: %s, errno: %s\n",filedes,path,strerror(errno)));
2053 if (errno == EINVAL) {
2062 static int solaris_write_xattr(int attrfd, const char *value, size_t size)
2064 if ((ftruncate(attrfd, 0) == 0) && (write(attrfd, value, size) == size)) {
2067 DEBUG(10,("solaris_write_xattr FAILED!\n"));
2071 #endif /*HAVE_ATTROPEN*/
2074 /****************************************************************************
2075 Return the major devicenumber for UNIX extensions.
2076 ****************************************************************************/
2078 uint32 unix_dev_major(SMB_DEV_T dev)
2080 #if defined(HAVE_DEVICE_MAJOR_FN)
2081 return (uint32)major(dev);
2083 return (uint32)(dev >> 8);
2087 /****************************************************************************
2088 Return the minor devicenumber for UNIX extensions.
2089 ****************************************************************************/
2091 uint32 unix_dev_minor(SMB_DEV_T dev)
2093 #if defined(HAVE_DEVICE_MINOR_FN)
2094 return (uint32)minor(dev);
2096 return (uint32)(dev & 0xff);
2101 /*******************************************************************
2102 Return the number of CPUs.
2103 ********************************************************************/
2105 int sys_get_number_of_cores(void)
2109 #if defined(HAVE_SYSCONF)
2110 #if defined(_SC_NPROCESSORS_ONLN)
2111 ret = (int)sysconf(_SC_NPROCESSORS_ONLN);
2113 #if defined(_SC_NPROCESSORS_CONF)
2115 ret = (int)sysconf(_SC_NPROCESSORS_CONF);
2118 #elif defined(HAVE_SYSCTL) && defined(CTL_HW)
2120 unsigned int len = sizeof(ret);
2123 #if defined(HW_AVAILCPU)
2124 name[1] = HW_AVAILCPU;
2126 if (sysctl(name, 2, &ret, &len, NULL, 0) == -1) {
2130 #if defined(HW_NCPU)
2134 if (sysctl(nm, 2, &count, &len, NULL, 0) == -1) {
2147 #if defined(WITH_AIO)
2149 /*******************************************************************
2150 An aio_read wrapper.
2151 ********************************************************************/
2153 int sys_aio_read(SMB_STRUCT_AIOCB *aiocb)
2155 #if defined(HAVE_AIO_READ)
2156 return aio_read(aiocb);
2163 /*******************************************************************
2164 An aio_write wrapper.
2165 ********************************************************************/
2167 int sys_aio_write(SMB_STRUCT_AIOCB *aiocb)
2169 #if defined(HAVE_AIO_WRITE)
2170 return aio_write(aiocb);
2177 /*******************************************************************
2178 An aio_return wrapper.
2179 ********************************************************************/
2181 ssize_t sys_aio_return(SMB_STRUCT_AIOCB *aiocb)
2183 #if defined(HAVE_AIO_RETURN)
2184 return aio_return(aiocb);
2191 /*******************************************************************
2192 An aio_cancel wrapper.
2193 ********************************************************************/
2195 int sys_aio_cancel(int fd, SMB_STRUCT_AIOCB *aiocb)
2197 #if defined(HAVE_AIO_CANCEL)
2198 return aio_cancel(fd, aiocb);
2205 /*******************************************************************
2206 An aio_error wrapper.
2207 ********************************************************************/
2209 int sys_aio_error(const SMB_STRUCT_AIOCB *aiocb)
2211 #if defined(HAVE_AIO_ERROR)
2212 return aio_error(aiocb);
2219 /*******************************************************************
2220 An aio_fsync wrapper.
2221 ********************************************************************/
2223 int sys_aio_fsync(int op, SMB_STRUCT_AIOCB *aiocb)
2225 #if defined(HAVE_AIO_FSYNC)
2226 return aio_fsync(op, aiocb);
2233 /*******************************************************************
2234 An aio_fsync wrapper.
2235 ********************************************************************/
2237 int sys_aio_suspend(const SMB_STRUCT_AIOCB * const cblist[], int n, const struct timespec *timeout)
2239 #if defined(HAVE_AIO_FSYNC)
2240 return aio_suspend(cblist, n, timeout);
2246 #else /* !WITH_AIO */
2248 int sys_aio_read(SMB_STRUCT_AIOCB *aiocb)
2254 int sys_aio_write(SMB_STRUCT_AIOCB *aiocb)
2260 ssize_t sys_aio_return(SMB_STRUCT_AIOCB *aiocb)
2266 int sys_aio_cancel(int fd, SMB_STRUCT_AIOCB *aiocb)
2272 int sys_aio_error(const SMB_STRUCT_AIOCB *aiocb)
2278 int sys_aio_fsync(int op, SMB_STRUCT_AIOCB *aiocb)
2284 int sys_aio_suspend(const SMB_STRUCT_AIOCB * const cblist[], int n, const struct timespec *timeout)
2289 #endif /* WITH_AIO */