Copyright (C) Jeremy Allison 2001-2002
Copyright (C) Simo Sorce 2001
Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
-
+ Copyright (C) James Peach 2006
+
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
+extern fstring local_machine;
+extern char *global_clobber_region_function;
+extern unsigned int global_clobber_region_line;
+extern fstring remote_arch;
+
/* Max allowable allococation - 256mb - 0x10000000 */
#define MAX_ALLOC_SIZE (1024*1024*256)
enum protocol_types Protocol = PROTOCOL_COREPLUS;
/* a default finfo structure to ensure all fields are sensible */
-file_info def_finfo = {-1,0,0,0,0,0,0,"",""};
+file_info def_finfo;
/* this is used by the chaining code */
int chain_size = 0;
return True;
}
+/***********************************************************************
+ Free memory allocated to global objects
+***********************************************************************/
+
+void gfree_names(void)
+{
+ SAFE_FREE( smb_myname );
+ SAFE_FREE( smb_myworkgroup );
+ SAFE_FREE( smb_scope );
+ free_netbios_names_array();
+}
+
+void gfree_all( void )
+{
+ gfree_names();
+ gfree_loadparm();
+ gfree_case_tables();
+ gfree_debugsyms();
+ gfree_charcnv();
+ gfree_interfaces();
+
+ /* release the talloc null_context memory last */
+ talloc_disable_null_tracking();
+}
+
const char *my_netbios_names(int i)
{
return smb_my_netbios_names[i];
BOOL init_names(void)
{
- extern fstring local_machine;
char *p;
int n;
return "/tmp";
}
-/****************************************************************************
- Determine whether we are in the specified group.
-****************************************************************************/
-
-BOOL in_group(gid_t group, gid_t current_gid, int ngroups, const gid_t *groups)
-{
- int i;
-
- if (group == current_gid)
- return(True);
-
- for (i=0;i<ngroups;i++)
- if (group == groups[i])
- return(True);
-
- return(False);
-}
-
/****************************************************************************
Add a gid to an array of gids if it's not already there.
****************************************************************************/
-void add_gid_to_array_unique(gid_t gid, gid_t **gids, int *num)
+BOOL add_gid_to_array_unique(TALLOC_CTX *mem_ctx, gid_t gid,
+ gid_t **gids, size_t *num_gids)
{
int i;
- for (i=0; i<*num; i++) {
- if ((*gids)[i] == gid)
- return;
+ if ((*num_gids != 0) && (*gids == NULL)) {
+ /*
+ * A former call to this routine has failed to allocate memory
+ */
+ return False;
}
-
- *gids = SMB_REALLOC_ARRAY(*gids, gid_t, *num+1);
- if (*gids == NULL)
- return;
+ for (i=0; i<*num_gids; i++) {
+ if ((*gids)[i] == gid) {
+ return True;
+ }
+ }
+
+ *gids = TALLOC_REALLOC_ARRAY(mem_ctx, *gids, gid_t, *num_gids+1);
+ if (*gids == NULL) {
+ *num_gids = 0;
+ return False;
+ }
- (*gids)[*num] = gid;
- *num += 1;
+ (*gids)[*num_gids] = gid;
+ *num_gids += 1;
+ return True;
}
/****************************************************************************
(*num ) = NULL;
while ((p = Atoic(p, &val, ":,")) != NULL && (*p) != ':') {
- uint32 *tn;
-
- tn = SMB_REALLOC_ARRAY((*num), uint32, (*count)+1);
- if (tn == NULL) {
- SAFE_FREE(*num);
+ *num = SMB_REALLOC_ARRAY((*num), uint32, (*count)+1);
+ if (!(*num)) {
return NULL;
- } else
- (*num) = tn;
+ }
(*num)[(*count)] = val;
(*count)++;
p++;
char *attrib_string(uint16 mode)
{
- static fstring attrstr;
+ fstring attrstr;
attrstr[0] = 0;
if (mode & aSYSTEM) fstrcat(attrstr,"S");
if (mode & aRONLY) fstrcat(attrstr,"R");
- return(attrstr);
+ return talloc_strdup(talloc_tos(), attrstr);
}
/*******************************************************************
if (DEBUGLEVEL < 50)
bcc = MIN(bcc, 512);
- dump_data(10, smb_buf(buf), bcc);
+ dump_data(10, (uint8 *)smb_buf(buf), bcc);
}
/*******************************************************************
int set_message(char *buf,int num_words,int num_bytes,BOOL zero)
{
- if (zero)
+ if (zero && (num_words || num_bytes)) {
memset(buf + smb_size,'\0',num_words*2 + num_bytes);
+ }
SCVAL(buf,smb_wct,num_words);
SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
return set_message_bcc((char *)outbuf,PTR_DIFF(end_ptr,smb_buf((char *)outbuf)));
}
+/*******************************************************************
+ Add a data blob to the end of a smb_buf, adjusting bcc and smb_len.
+ Return the bytes added
+********************************************************************/
+
+ssize_t message_push_blob(uint8 **outbuf, DATA_BLOB blob)
+{
+ size_t newlen = smb_len(*outbuf) + 4 + blob.length;
+ uint8 *tmp;
+
+ if (!(tmp = TALLOC_REALLOC_ARRAY(NULL, *outbuf, uint8, newlen))) {
+ DEBUG(0, ("talloc failed\n"));
+ return -1;
+ }
+ *outbuf = tmp;
+
+ memcpy(tmp + smb_len(tmp) + 4, blob.data, blob.length);
+ set_message_bcc((char *)tmp, smb_buflen(tmp) + blob.length);
+ return blob.length;
+}
+
/*******************************************************************
Reduce a file name, removing .. elements.
********************************************************************/
/* remove any double slashes */
all_string_sub(s, "\\\\", "\\", 0);
+ /* Remove leading .\\ characters */
+ if(strncmp(s, ".\\", 2) == 0) {
+ trim_string(s, ".\\", NULL);
+ if(*s == 0)
+ pstrcpy(s,".\\");
+ }
+
while ((p = strstr_m(s,"\\..\\")) != NULL) {
pstring s1;
}
trim_string(s,NULL,"\\..");
-
all_string_sub(s, "\\.\\", "\\", 0);
}
}
trim_string(s,NULL,"/..");
+ all_string_sub(s, "/./", "/", 0);
}
-/****************************************************************************
- Make a dir struct.
-****************************************************************************/
-
-void make_dir_struct(char *buf, const char *mask, const char *fname,SMB_OFF_T size,int mode,time_t date)
-{
- char *p;
- pstring mask2;
-
- pstrcpy(mask2,mask);
-
- if ((mode & aDIR) != 0)
- size = 0;
-
- memset(buf+1,' ',11);
- if ((p = strchr_m(mask2,'.')) != NULL) {
- *p = 0;
- push_ascii(buf+1,mask2,8, 0);
- push_ascii(buf+9,p+1,3, 0);
- *p = '.';
- } else
- push_ascii(buf+1,mask2,11, 0);
-
- memset(buf+21,'\0',DIR_STRUCT_SIZE-21);
- SCVAL(buf,21,mode);
- put_dos_date(buf,22,date);
- SSVAL(buf,26,size & 0xFFFF);
- SSVAL(buf,28,(size >> 16)&0xFFFF);
- /* We only uppercase if the protocol is downrev.
- Strange, but verified on W2K3. Needed for OS/2. JRA. */
- push_ascii(buf+30,fname,12,Protocol < PROTOCOL_NT1 ? STR_UPPER : 0);
- DEBUG(8,("put name [%s] from [%s] into dir struct\n",buf+30, fname));
+void clean_name(char *s)
+{
+ dos_clean_name(s);
+ unix_clean_name(s);
}
/*******************************************************************
#endif
}
+/*******************************************************************
+ Write data into an fd at a given offset. Ignore seek errors.
+********************************************************************/
+
+ssize_t write_data_at_offset(int fd, const char *buffer, size_t N, SMB_OFF_T pos)
+{
+ size_t total=0;
+ ssize_t ret;
+
+ if (pos == (SMB_OFF_T)-1) {
+ return write_data(fd, buffer, N);
+ }
+#if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
+ while (total < N) {
+ ret = sys_pwrite(fd,buffer + total,N - total, pos);
+ if (ret == -1 && errno == ESPIPE) {
+ return write_data(fd, buffer + total,N - total);
+ }
+ if (ret == -1) {
+ DEBUG(0,("write_data_at_offset: write failure. Error = %s\n", strerror(errno) ));
+ return -1;
+ }
+ if (ret == 0) {
+ return total;
+ }
+ total += ret;
+ pos += ret;
+ }
+ return (ssize_t)total;
+#else
+ /* Use lseek and write_data. */
+ if (sys_lseek(fd, pos, SEEK_SET) == -1) {
+ if (errno != ESPIPE) {
+ return -1;
+ }
+ }
+ return write_data(fd, buffer, N);
+#endif
+}
+
/****************************************************************************
Set a fd into blocking/nonblocking mode. Uses POSIX O_NONBLOCK if available,
else
size_t num_to_read_thistime;
size_t num_written = 0;
- if ((buf = SMB_MALLOC(TRANSFER_BUF_SIZE)) == NULL)
+ if ((buf = SMB_MALLOC_ARRAY(char, TRANSFER_BUF_SIZE)) == NULL)
return -1;
while (total < n) {
Become a daemon, discarding the controlling terminal.
****************************************************************************/
-void become_daemon(BOOL Fork)
+void become_daemon(BOOL Fork, BOOL no_process_group)
{
if (Fork) {
if (sys_fork()) {
/* detach from the terminal */
#ifdef HAVE_SETSID
- setsid();
+ if (!no_process_group) setsid();
#elif defined(TIOCNOTTY)
- {
+ if (!no_process_group) {
int i = sys_open("/dev/tty", O_RDWR, 0);
if (i != -1) {
ioctl(i, (int) TIOCNOTTY, (char *)0);
void *malloc_(size_t size)
{
+ if (size == 0) {
+ return NULL;
+ }
#undef malloc
return malloc(size);
#define malloc(s) __ERROR_DONT_USE_MALLOC_DIRECTLY
static void *calloc_(size_t count, size_t size)
{
+ if (size == 0 || count == 0) {
+ return NULL;
+ }
#undef calloc
return calloc(count, size);
#define calloc(n,s) __ERROR_DONT_USE_CALLOC_DIRECTLY
return NULL;
}
+ if (el_size == 0 || count == 0) {
+ return NULL;
+ }
#if defined(PARANOID_MALLOC_CHECKER)
return malloc_(el_size*count);
#else
#endif
}
+/****************************************************************************
+ Type-safe memalign
+****************************************************************************/
+
+void *memalign_array(size_t el_size, size_t align, unsigned int count)
+{
+ if (count >= MAX_ALLOC_SIZE/el_size) {
+ return NULL;
+ }
+
+ return sys_memalign(align, el_size*count);
+}
+
/****************************************************************************
Type-safe calloc.
****************************************************************************/
if (nmemb >= MAX_ALLOC_SIZE/size) {
return NULL;
}
+ if (size == 0 || nmemb == 0) {
+ return NULL;
+ }
#if defined(PARANOID_MALLOC_CHECKER)
return calloc_(nmemb, size);
#else
/****************************************************************************
Expand a pointer to be a particular size.
+ Note that this version of Realloc has an extra parameter that decides
+ whether to free the passed in storage on allocation failure or if the
+ new size is zero.
+
+ This is designed for use in the typical idiom of :
+
+ p = SMB_REALLOC(p, size)
+ if (!p) {
+ return error;
+ }
+
+ and not to have to keep track of the old 'p' contents to free later, nor
+ to worry if the size parameter was zero. In the case where NULL is returned
+ we guarentee that p has been freed.
+
+ If free later semantics are desired, then pass 'free_old_on_error' as False which
+ guarentees that the old contents are not freed on error, even if size == 0. To use
+ this idiom use :
+
+ tmp = SMB_REALLOC_KEEP_OLD_ON_ERROR(p, size);
+ if (!tmp) {
+ SAFE_FREE(p);
+ return error;
+ } else {
+ p = tmp;
+ }
+
+ Changes were instigated by Coverity error checking. JRA.
****************************************************************************/
-void *Realloc(void *p,size_t size)
+void *Realloc(void *p, size_t size, BOOL free_old_on_error)
{
void *ret=NULL;
if (size == 0) {
- SAFE_FREE(p);
- DEBUG(5,("Realloc asked for 0 bytes\n"));
+ if (free_old_on_error) {
+ SAFE_FREE(p);
+ }
+ DEBUG(2,("Realloc asked for 0 bytes\n"));
return NULL;
}
#if defined(PARANOID_MALLOC_CHECKER)
- if (!p)
+ if (!p) {
ret = (void *)malloc_(size);
- else
+ } else {
ret = (void *)realloc_(p,size);
+ }
#else
- if (!p)
+ if (!p) {
ret = (void *)malloc(size);
- else
+ } else {
ret = (void *)realloc(p,size);
+ }
#endif
- if (!ret)
+ if (!ret) {
+ if (free_old_on_error && p) {
+ SAFE_FREE(p);
+ }
DEBUG(0,("Memory allocation error: failed to expand to %d bytes\n",(int)size));
+ }
return(ret);
}
Type-safe realloc.
****************************************************************************/
-void *realloc_array(void *p,size_t el_size, unsigned int count)
+void *realloc_array(void *p, size_t el_size, unsigned int count, BOOL free_old_on_error)
{
if (count >= MAX_ALLOC_SIZE/el_size) {
+ if (free_old_on_error) {
+ SAFE_FREE(p);
+ }
return NULL;
}
- return Realloc(p,el_size*count);
+ return Realloc(p, el_size*count, free_old_on_error);
+}
+
+/****************************************************************************
+ (Hopefully) efficient array append.
+****************************************************************************/
+
+void add_to_large_array(TALLOC_CTX *mem_ctx, size_t element_size,
+ void *element, void *_array, uint32 *num_elements,
+ ssize_t *array_size)
+{
+ void **array = (void **)_array;
+
+ if (*array_size < 0) {
+ return;
+ }
+
+ if (*array == NULL) {
+ if (*array_size == 0) {
+ *array_size = 128;
+ }
+
+ if (*array_size >= MAX_ALLOC_SIZE/element_size) {
+ goto error;
+ }
+
+ *array = TALLOC(mem_ctx, element_size * (*array_size));
+ if (*array == NULL) {
+ goto error;
+ }
+ }
+
+ if (*num_elements == *array_size) {
+ *array_size *= 2;
+
+ if (*array_size >= MAX_ALLOC_SIZE/element_size) {
+ goto error;
+ }
+
+ *array = TALLOC_REALLOC(mem_ctx, *array,
+ element_size * (*array_size));
+
+ if (*array == NULL) {
+ goto error;
+ }
+ }
+
+ memcpy((char *)(*array) + element_size*(*num_elements),
+ element, element_size);
+ *num_elements += 1;
+
+ return;
+
+ error:
+ *num_elements = 0;
+ *array_size = -1;
}
/****************************************************************************
BOOL get_myname(char *my_name)
{
- pstring hostname;
+ fstring hostname;
*hostname = 0;
if (gethostname(hostname, sizeof(hostname)) == -1) {
DEBUG(0,("gethostname failed\n"));
return False;
- }
+ }
/* Ensure null termination. */
hostname[sizeof(hostname)-1] = '\0';
if (p)
*p = 0;
-
+
fstrcpy(my_name,hostname);
}
-
+
return(True);
}
if (p) {
p++;
fstrcpy(my_domname, p);
+ return True;
}
return False;
*******************************************************************/
#ifdef WITH_NISPLUS_HOME
-char *automount_lookup( char *user_name)
+char *automount_lookup(const char *user_name)
{
static fstring last_key = "";
static pstring last_value = "";
}
#else /* WITH_NISPLUS_HOME */
-char *automount_lookup( char *user_name)
+char *automount_lookup(const char *user_name)
{
static fstring last_key = "";
static pstring last_value = "";
} else {
if ((nis_error = yp_match(nis_domain, nis_map, user_name, strlen(user_name),
&nis_result, &nis_result_len)) == 0) {
- if (!nis_error && nis_result_len >= sizeof(pstring)) {
- nis_result_len = sizeof(pstring)-1;
- }
fstrcpy(last_key, user_name);
- strncpy(last_value, nis_result, nis_result_len);
- last_value[nis_result_len] = '\0';
+ pstrcpy(last_value, nis_result);
strip_mount_options(&last_value);
} else if(nis_error == YPERR_KEY) {
Check if a process exists. Does this work on all unixes?
****************************************************************************/
-BOOL process_exists(pid_t pid)
+BOOL process_exists(const struct server_id pid)
+{
+ if (procid_is_me(&pid)) {
+ return True;
+ }
+
+ if (procid_is_local(&pid)) {
+ return (kill(pid.pid,0) == 0 || errno != ESRCH);
+ }
+
+#ifdef CLUSTER_SUPPORT
+ return ctdbd_process_exists(messaging_ctdbd_connection(), pid.vnn,
+ pid.pid);
+#else
+ return False;
+#endif
+}
+
+BOOL process_exists_by_pid(pid_t pid)
{
/* Doing kill with a non-positive pid causes messages to be
* sent to places we don't want. */
const char *uidtoname(uid_t uid)
{
- static fstring name;
- struct passwd *pass;
+ TALLOC_CTX *ctx = talloc_tos();
+ char *name = NULL;
+ struct passwd *pass = NULL;
- pass = getpwuid_alloc(uid);
+ pass = getpwuid_alloc(ctx,uid);
if (pass) {
- fstrcpy(name, pass->pw_name);
- passwd_free(&pass);
+ name = talloc_strdup(ctx,pass->pw_name);
+ TALLOC_FREE(pass);
} else {
- slprintf(name, sizeof(name) - 1, "%ld",(long int)uid);
+ name = talloc_asprintf(ctx,
+ "%ld",
+ (long int)uid);
}
return name;
}
-
/*******************************************************************
Convert a gid into a group name.
********************************************************************/
char *gidtoname(gid_t gid)
{
- static fstring name;
+ fstring name;
struct group *grp;
grp = getgrgid(gid);
- if (grp)
- return(grp->gr_name);
- slprintf(name,sizeof(name) - 1, "%d",(int)gid);
- return(name);
+ if (grp) {
+ fstrcpy(name, grp->gr_name);
+ }
+ else {
+ slprintf(name,sizeof(name) - 1, "%d",(int)gid);
+ }
+ return talloc_strdup(talloc_tos(), name);
}
/*******************************************************************
char *p;
uid_t u;
- pass = getpwnam_alloc(name);
+ pass = getpwnam_alloc(NULL, name);
if (pass) {
u = pass->pw_uid;
- passwd_free(&pass);
+ TALLOC_FREE(pass);
return u;
}
return (gid_t)-1;
}
-/*******************************************************************
- legacy wrapper for smb_panic2()
-********************************************************************/
-void smb_panic( const char *why )
-{
- smb_panic2( why, True );
-}
-
/*******************************************************************
Something really nasty happened - panic !
********************************************************************/
-#ifdef HAVE_LIBEXC_H
-#include <libexc.h>
-#endif
-
-void smb_panic2(const char *why, BOOL decrement_pid_count )
+void smb_panic(const char *const why)
{
char *cmd;
int result;
-#ifdef HAVE_BACKTRACE_SYMBOLS
- void *backtrace_stack[BACKTRACE_STACK_SIZE];
- size_t backtrace_size;
- char **backtrace_strings;
-#endif
#ifdef DEVELOPER
{
- extern char *global_clobber_region_function;
- extern unsigned int global_clobber_region_line;
if (global_clobber_region_function) {
DEBUG(0,("smb_panic: clobber_region() last called from [%s(%u)]\n",
}
#endif
- /* only smbd needs to decrement the smbd counter in connections.tdb */
- if ( decrement_pid_count )
- decrement_smbd_process_count();
+ DEBUG(0,("PANIC (pid %llu): %s\n",
+ (unsigned long long)sys_getpid(), why));
+ log_stack_trace();
cmd = lp_panic_action();
if (cmd && *cmd) {
DEBUG(0, ("smb_panic(): action returned status %d\n",
WEXITSTATUS(result)));
}
- DEBUG(0,("PANIC: %s\n", why));
-#ifdef HAVE_BACKTRACE_SYMBOLS
+ dump_core();
+}
+
+/*******************************************************************
+ Print a backtrace of the stack to the debug log. This function
+ DELIBERATELY LEAKS MEMORY. The expectation is that you should
+ exit shortly after calling it.
+********************************************************************/
+
+#ifdef HAVE_LIBUNWIND_H
+#include <libunwind.h>
+#endif
+
+#ifdef HAVE_EXECINFO_H
+#include <execinfo.h>
+#endif
+
+#ifdef HAVE_LIBEXC_H
+#include <libexc.h>
+#endif
+
+void log_stack_trace(void)
+{
+#ifdef HAVE_LIBUNWIND
+ /* Try to use libunwind before any other technique since on ia64
+ * libunwind correctly walks the stack in more circumstances than
+ * backtrace.
+ */
+ unw_cursor_t cursor;
+ unw_context_t uc;
+ unsigned i = 0;
+
+ char procname[256];
+ unw_word_t ip, sp, off;
+
+ procname[sizeof(procname) - 1] = '\0';
+
+ if (unw_getcontext(&uc) != 0) {
+ goto libunwind_failed;
+ }
+
+ if (unw_init_local(&cursor, &uc) != 0) {
+ goto libunwind_failed;
+ }
+
+ DEBUG(0, ("BACKTRACE:\n"));
+
+ do {
+ ip = sp = 0;
+ unw_get_reg(&cursor, UNW_REG_IP, &ip);
+ unw_get_reg(&cursor, UNW_REG_SP, &sp);
+
+ switch (unw_get_proc_name(&cursor,
+ procname, sizeof(procname) - 1, &off) ) {
+ case 0:
+ /* Name found. */
+ case -UNW_ENOMEM:
+ /* Name truncated. */
+ DEBUGADD(0, (" #%u %s + %#llx [ip=%#llx] [sp=%#llx]\n",
+ i, procname, (long long)off,
+ (long long)ip, (long long) sp));
+ break;
+ default:
+ /* case -UNW_ENOINFO: */
+ /* case -UNW_EUNSPEC: */
+ /* No symbol name found. */
+ DEBUGADD(0, (" #%u %s [ip=%#llx] [sp=%#llx]\n",
+ i, "<unknown symbol>",
+ (long long)ip, (long long) sp));
+ }
+ ++i;
+ } while (unw_step(&cursor) > 0);
+
+ return;
+
+libunwind_failed:
+ DEBUG(0, ("unable to produce a stack trace with libunwind\n"));
+
+#elif HAVE_BACKTRACE_SYMBOLS
+ void *backtrace_stack[BACKTRACE_STACK_SIZE];
+ size_t backtrace_size;
+ char **backtrace_strings;
+
/* get the backtrace (stack frames) */
backtrace_size = backtrace(backtrace_stack,BACKTRACE_STACK_SIZE);
backtrace_strings = backtrace_symbols(backtrace_stack, backtrace_size);
#elif HAVE_LIBEXC
-#define NAMESIZE 32 /* Arbitrary */
-
/* The IRIX libexc library provides an API for unwinding the stack. See
* libexc(3) for details. Apparantly trace_back_stack leaks memory, but
* since we are about to abort anyway, it hardly matters.
- *
- * Note that if we paniced due to a SIGSEGV or SIGBUS (or similar) this
- * will fail with a nasty message upon failing to open the /proc entry.
*/
- {
- __uint64_t addrs[BACKTRACE_STACK_SIZE];
- char * names[BACKTRACE_STACK_SIZE];
- char namebuf[BACKTRACE_STACK_SIZE * NAMESIZE];
- int i;
- int levels;
+#define NAMESIZE 32 /* Arbitrary */
- ZERO_ARRAY(addrs);
- ZERO_ARRAY(names);
- ZERO_ARRAY(namebuf);
+ __uint64_t addrs[BACKTRACE_STACK_SIZE];
+ char * names[BACKTRACE_STACK_SIZE];
+ char namebuf[BACKTRACE_STACK_SIZE * NAMESIZE];
- /* We need to be root so we can open our /proc entry to walk
- * our stack. It also helps when we want to dump core.
- */
- become_root();
+ int i;
+ int levels;
- for (i = 0; i < BACKTRACE_STACK_SIZE; i++) {
- names[i] = namebuf + (i * NAMESIZE);
- }
+ ZERO_ARRAY(addrs);
+ ZERO_ARRAY(names);
+ ZERO_ARRAY(namebuf);
+
+ /* We need to be root so we can open our /proc entry to walk
+ * our stack. It also helps when we want to dump core.
+ */
+ become_root();
+
+ for (i = 0; i < BACKTRACE_STACK_SIZE; i++) {
+ names[i] = namebuf + (i * NAMESIZE);
+ }
- levels = trace_back_stack(0, addrs, names,
- BACKTRACE_STACK_SIZE, NAMESIZE);
+ levels = trace_back_stack(0, addrs, names,
+ BACKTRACE_STACK_SIZE, NAMESIZE - 1);
- DEBUG(0, ("BACKTRACE: %d stack frames:\n", levels));
- for (i = 0; i < levels; i++) {
- DEBUGADD(0, (" #%d 0x%llx %s\n", i, addrs[i], names[i]));
- }
- }
+ DEBUG(0, ("BACKTRACE: %d stack frames:\n", levels));
+ for (i = 0; i < levels; i++) {
+ DEBUGADD(0, (" #%d 0x%llx %s\n", i, addrs[i], names[i]));
+ }
#undef NAMESIZE
-#endif
- dbgflush();
-#ifdef SIGABRT
- CatchSignal(SIGABRT,SIGNAL_CAST SIG_DFL);
+#else
+ DEBUG(0, ("unable to produce a stack trace on this platform\n"));
#endif
- abort();
}
/*******************************************************************
A readdir wrapper which just returns the file name.
********************************************************************/
-const char *readdirname(DIR *p)
+const char *readdirname(SMB_STRUCT_DIR *p)
{
SMB_STRUCT_DIRENT *ptr;
char *dname;
return(NULL);
#endif
-#ifdef HAVE_BROKEN_READDIR
+#ifdef HAVE_BROKEN_READDIR_NAME
/* using /usr/ucb/cc is BAD */
dname = dname - 2;
#endif
- {
- static pstring buf;
- int len = NAMLEN(ptr);
- memcpy(buf, dname, len);
- buf[len] = 0;
- dname = buf;
- }
-
- return(dname);
+ return talloc_strdup(talloc_tos(), dname);
}
/*******************************************************************
BOOL is_in_path(const char *name, name_compare_entry *namelist, BOOL case_sensitive)
{
- pstring last_component;
- char *p;
+ const char *last_component;
/* if we have no list it's obviously not in the path */
if((namelist == NULL ) || ((namelist != NULL) && (namelist[0].name == NULL))) {
DEBUG(8, ("is_in_path: %s\n", name));
/* Get the last component of the unix name. */
- p = strrchr_m(name, '/');
- strncpy(last_component, p ? ++p : name, sizeof(last_component)-1);
- last_component[sizeof(last_component)-1] = '\0';
+ last_component = strrchr_m(name, '/');
+ if (!last_component) {
+ last_component = name;
+ } else {
+ last_component++; /* Go past '/' */
+ }
for(; namelist->name != NULL; namelist++) {
if(namelist->is_wild) {
}
}
DEBUG(8,("is_in_path: match not found\n"));
-
return False;
}
SAFE_FREE(name_array);
}
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_LOCKING
+
/****************************************************************************
Simple routine to do POSIX file locking. Cruft in NFS and 64->32 bit mapping
is dealt with in posix.c
+ Returns True if the lock was granted, False otherwise.
****************************************************************************/
BOOL fcntl_lock(int fd, int op, SMB_OFF_T offset, SMB_OFF_T count, int type)
SMB_STRUCT_FLOCK lock;
int ret;
- DEBUG(8,("fcntl_lock %d %d %.0f %.0f %d\n",fd,op,(double)offset,(double)count,type));
+ DEBUG(8,("fcntl_lock fd=%d op=%d offset=%.0f count=%.0f type=%d\n",
+ fd,op,(double)offset,(double)count,type));
lock.l_type = type;
lock.l_whence = SEEK_SET;
ret = sys_fcntl_ptr(fd,op,&lock);
- if (ret == -1 && errno != 0)
- DEBUG(3,("fcntl_lock: fcntl lock gave errno %d (%s)\n",errno,strerror(errno)));
-
- /* a lock query */
- if (op == SMB_F_GETLK) {
- if ((ret != -1) &&
- (lock.l_type != F_UNLCK) &&
- (lock.l_pid != 0) &&
- (lock.l_pid != sys_getpid())) {
- DEBUG(3,("fcntl_lock: fd %d is locked by pid %d\n",fd,(int)lock.l_pid));
- return(True);
- }
-
- /* it must be not locked or locked by me */
- return(False);
- }
-
- /* a lock set or unset */
if (ret == -1) {
+ int sav = errno;
DEBUG(3,("fcntl_lock: lock failed at offset %.0f count %.0f op %d type %d (%s)\n",
(double)offset,(double)count,op,type,strerror(errno)));
- return(False);
+ errno = sav;
+ return False;
}
/* everything went OK */
DEBUG(8,("fcntl_lock: Lock call successful\n"));
- return(True);
+ return True;
}
-/*******************************************************************
- Is the name specified one of my netbios names.
- Returns true if it is equal, false otherwise.
-********************************************************************/
+/****************************************************************************
+ Simple routine to query existing file locks. Cruft in NFS and 64->32 bit mapping
+ is dealt with in posix.c
+ Returns True if we have information regarding this lock region (and returns
+ F_UNLCK in *ptype if the region is unlocked). False if the call failed.
+****************************************************************************/
-BOOL is_myname(const char *s)
+BOOL fcntl_getlock(int fd, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid)
{
- int n;
- BOOL ret = False;
+ SMB_STRUCT_FLOCK lock;
+ int ret;
- for (n=0; my_netbios_names(n); n++) {
- if (strequal(my_netbios_names(n), s)) {
- ret=True;
- break;
+ DEBUG(8,("fcntl_getlock fd=%d offset=%.0f count=%.0f type=%d\n",
+ fd,(double)*poffset,(double)*pcount,*ptype));
+
+ lock.l_type = *ptype;
+ lock.l_whence = SEEK_SET;
+ lock.l_start = *poffset;
+ lock.l_len = *pcount;
+ lock.l_pid = 0;
+
+ ret = sys_fcntl_ptr(fd,SMB_F_GETLK,&lock);
+
+ if (ret == -1) {
+ int sav = errno;
+ DEBUG(3,("fcntl_getlock: lock request failed at offset %.0f count %.0f type %d (%s)\n",
+ (double)*poffset,(double)*pcount,*ptype,strerror(errno)));
+ errno = sav;
+ return False;
+ }
+
+ *ptype = lock.l_type;
+ *poffset = lock.l_start;
+ *pcount = lock.l_len;
+ *ppid = lock.l_pid;
+
+ DEBUG(3,("fcntl_getlock: fd %d is returned info %d pid %u\n",
+ fd, (int)lock.l_type, (unsigned int)lock.l_pid));
+ return True;
+}
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_ALL
+
+/*******************************************************************
+ Is the name specified one of my netbios names.
+ Returns true if it is equal, false otherwise.
+********************************************************************/
+
+BOOL is_myname(const char *s)
+{
+ int n;
+ BOOL ret = False;
+
+ for (n=0; my_netbios_names(n); n++) {
+ if (strequal(my_netbios_names(n), s)) {
+ ret=True;
+ break;
}
}
DEBUG(8, ("is_myname(\"%s\") returns %d\n", s, ret));
/* optimize for the common case */
- if (strequal(servername, global_myname()))
+ if (strequal(servername, global_myname()))
return True;
/* check for an alias */
/* check for loopback */
- if (strequal(servername, "localhost"))
+ if (strequal(servername, "127.0.0.1"))
+ return True;
+
+ if (strequal(servername, "localhost"))
return True;
/* maybe it's my dns name */
if ( get_mydnsfullname( dnsname ) )
if ( strequal( servername, dnsname ) )
return True;
-
+
/* handle possible CNAME records */
if ( !is_ipaddress( servername ) ) {
putip( (char*)&return_ip, (char*)hp->h_addr );
fstrcpy( name, inet_ntoa( return_ip ) );
servername = name;
- }
+ }
}
-
+
/* maybe its an IP address? */
if (is_ipaddress(servername)) {
struct iface_struct nics[MAX_INTERFACES];
int i, n;
uint32 ip;
-
+
ip = interpret_addr(servername);
if ((ip==0) || (ip==0xffffffff))
return False;
-
+
n = get_interfaces(nics, MAX_INTERFACES);
for (i=0; i<n; i++) {
- if (ip == nics[i].ip.s_addr)
+ if (ip == nics[i].iface_addr.ip.s_addr)
return True;
}
- }
+ }
/* no match */
return False;
/*******************************************************************
we distinguish between 2K and XP by the "Native Lan Manager" string
WinXP => "Windows 2002 5.1"
+ WinXP 64bit => "Windows XP 5.2"
Win2k => "Windows 2000 5.0"
- NT4 => "Windows NT 4.0"
+ NT4 => "Windows NT 4.0"
Win9x => "Windows 4.0"
- Windows 2003 doesn't set the native lan manager string but
+ Windows 2003 doesn't set the native lan manager string but
they do set the domain to "Windows 2003 5.2" (probably a bug).
********************************************************************/
void ra_lanman_string( const char *native_lanman )
-{
+{
if ( strcmp( native_lanman, "Windows 2002 5.1" ) == 0 )
set_remote_arch( RA_WINXP );
+ else if ( strcmp( native_lanman, "Windows XP 5.2" ) == 0 )
+ set_remote_arch( RA_WINXP );
else if ( strcmp( native_lanman, "Windows Server 2003 5.2" ) == 0 )
set_remote_arch( RA_WIN2K3 );
}
void set_remote_arch(enum remote_arch_types type)
{
- extern fstring remote_arch;
ra_type = type;
switch( type ) {
case RA_WFWG:
case RA_WIN2K3:
fstrcpy(remote_arch, "Win2K3");
break;
+ case RA_VISTA:
+ fstrcpy(remote_arch, "Vista");
+ break;
case RA_SAMBA:
fstrcpy(remote_arch,"Samba");
break;
DEBUG(level,("%c", isprint(buf[i])?buf[i]:'.'));
}
-void dump_data(int level, const char *buf1,int len)
+void dump_data(int level, const unsigned char *buf1,int len)
{
const unsigned char *buf = (const unsigned char *)buf1;
int i=0;
#endif
}
-/*****************************************************************
- Splits out the start of the key (HKLM or HKU) and the rest of the key.
-*****************************************************************/
-
-BOOL reg_split_key(const char *full_keyname, uint32 *reg_type, char *key_name)
-{
- pstring tmp;
-
- if (!next_token(&full_keyname, tmp, "\\", sizeof(tmp)))
- return False;
-
- (*reg_type) = 0;
-
- DEBUG(10, ("reg_split_key: hive %s\n", tmp));
-
- if (strequal(tmp, "HKLM") || strequal(tmp, "HKEY_LOCAL_MACHINE"))
- (*reg_type) = HKEY_LOCAL_MACHINE;
- else if (strequal(tmp, "HKCR") || strequal(tmp, "HKEY_CLASSES_ROOT"))
- (*reg_type) = HKEY_CLASSES_ROOT;
- else if (strequal(tmp, "HKU") || strequal(tmp, "HKEY_USERS"))
- (*reg_type) = HKEY_USERS;
- else if (strequal(tmp, "HKPD")||strequal(tmp, "HKEY_PERFORMANCE_DATA"))
- (*reg_type) = HKEY_PERFORMANCE_DATA;
- else {
- DEBUG(10,("reg_split_key: unrecognised hive key %s\n", tmp));
- return False;
- }
-
- if (next_token(&full_keyname, tmp, "\n\r", sizeof(tmp)))
- fstrcpy(key_name, tmp);
- else
- key_name[0] = 0;
-
- DEBUG(10, ("reg_split_key: name %s\n", key_name));
-
- return True;
-}
-
/*****************************************************************
Possibly replace mkstemp if it is broken.
*****************************************************************/
-int smb_mkstemp(char *template)
+int smb_mkstemp(char *name_template)
{
#if HAVE_SECURE_MKSTEMP
- return mkstemp(template);
+ return mkstemp(name_template);
#else
/* have a reasonable go at emulating it. Hope that
the system mktemp() isn't completly hopeless */
- char *p = mktemp(template);
+ char *p = mktemp(name_template);
if (!p)
return -1;
return open(p, O_CREAT|O_EXCL|O_RDWR, 0600);
void *smb_xmalloc_array(size_t size, unsigned int count)
{
void *p;
- if (size == 0)
- smb_panic("smb_xmalloc_array: called with zero size.\n");
+ if (size == 0) {
+ smb_panic("smb_xmalloc_array: called with zero size");
+ }
if (count >= MAX_ALLOC_SIZE/size) {
- smb_panic("smb_xmalloc: alloc size too large.\n");
+ smb_panic("smb_xmalloc_array: alloc size too large");
}
if ((p = SMB_MALLOC(size*count)) == NULL) {
DEBUG(0, ("smb_xmalloc_array failed to allocate %lu * %lu bytes\n",
(unsigned long)size, (unsigned long)count));
- smb_panic("smb_xmalloc_array: malloc fail.\n");
+ smb_panic("smb_xmalloc_array: malloc failed");
}
return p;
}
#undef strdup
#endif
#endif
+
+#ifndef HAVE_STRDUP
+#define strdup rep_strdup
+#endif
+
char *s1 = strdup(s);
#if defined(PARANOID_MALLOC_CHECKER)
+#ifdef strdup
+#undef strdup
+#endif
#define strdup(s) __ERROR_DONT_USE_STRDUP_DIRECTLY
#endif
- if (!s1)
- smb_panic("smb_xstrdup: malloc fail\n");
+ if (!s1) {
+ smb_panic("smb_xstrdup: malloc failed");
+ }
return s1;
}
#undef strndup
#endif
#endif
+
+#if (defined(BROKEN_STRNDUP) || !defined(HAVE_STRNDUP))
+#undef HAVE_STRNDUP
+#define strndup rep_strndup
+#endif
+
char *s1 = strndup(s, n);
#if defined(PARANOID_MALLOC_CHECKER)
+#ifdef strndup
+#undef strndup
+#endif
#define strndup(s,n) __ERROR_DONT_USE_STRNDUP_DIRECTLY
#endif
- if (!s1)
- smb_panic("smb_xstrndup: malloc fail\n");
+ if (!s1) {
+ smb_panic("smb_xstrndup: malloc failed");
+ }
return s1;
}
VA_COPY(ap2, ap);
n = vasprintf(ptr, format, ap2);
- if (n == -1 || ! *ptr)
+ if (n == -1 || ! *ptr) {
smb_panic("smb_xvasprintf: out of memory");
+ }
return n;
}
char *lock_path(const char *name)
{
- static pstring fname;
+ pstring fname;
pstrcpy(fname,lp_lockdir());
trim_char(fname,'\0','/');
pstrcat(fname,"/");
pstrcat(fname,name);
- return fname;
+ return talloc_strdup(talloc_tos(), fname);
}
/*****************************************************************
char *pid_path(const char *name)
{
- static pstring fname;
+ pstring fname;
pstrcpy(fname,lp_piddir());
trim_char(fname,'\0','/');
pstrcat(fname,"/");
pstrcat(fname,name);
- return fname;
+ return talloc_strdup(talloc_tos(), fname);
}
/**
char *lib_path(const char *name)
{
- static pstring fname;
- fstr_sprintf(fname, "%s/%s", dyn_LIBDIR, name);
- return fname;
+ return talloc_asprintf(talloc_tos(), "%s/%s", dyn_LIBDIR, name);
}
/**
/*******************************************************************
Given a filename - get its directory name
NB: Returned in static storage. Caveats:
- o Not safe in thread environment.
- o Caller must not free.
o If caller wishes to preserve, they should copy.
********************************************************************/
char *parent_dirname(const char *path)
{
- static pstring dirpath;
+ char *parent;
+
+ if (!parent_dirname_talloc(talloc_tos(), path, &parent, NULL)) {
+ return NULL;
+ }
+
+ return parent;
+}
+
+BOOL parent_dirname_talloc(TALLOC_CTX *mem_ctx, const char *dir,
+ char **parent, const char **name)
+{
char *p;
+ ptrdiff_t len;
+
+ p = strrchr_m(dir, '/'); /* Find final '/', if any */
- if (!path)
- return(NULL);
+ if (p == NULL) {
+ if (!(*parent = talloc_strdup(mem_ctx, "."))) {
+ return False;
+ }
+ if (name) {
+ *name = "";
+ }
+ return True;
+ }
- pstrcpy(dirpath, path);
- p = strrchr_m(dirpath, '/'); /* Find final '/', if any */
- if (!p) {
- pstrcpy(dirpath, "."); /* No final "/", so dir is "." */
- } else {
- if (p == dirpath)
- ++p; /* For root "/", leave "/" in place */
- *p = '\0';
+ len = p-dir;
+
+ if (!(*parent = TALLOC_ARRAY(mem_ctx, char, len+1))) {
+ return False;
}
- return dirpath;
-}
+ memcpy(*parent, dir, len);
+ (*parent)[len] = '\0';
+ if (name) {
+ *name = p+1;
+ }
+ return True;
+}
/*******************************************************************
Determine if a pattern contains any Microsoft wildcard characters.
BOOL ms_has_wild(const char *s)
{
char c;
+
+ if (lp_posix_pathnames()) {
+ /* With posix pathnames no characters are wild. */
+ return False;
+ }
+
while ((c = *s++)) {
switch (c) {
case '*':
of the ".." name.
*******************************************************************/
-BOOL mask_match(const char *string, char *pattern, BOOL is_case_sensitive)
+BOOL mask_match(const char *string, const char *pattern, BOOL is_case_sensitive)
{
if (strcmp(string,"..") == 0)
string = ".";
pattern translation.
*******************************************************************/
-BOOL mask_match_search(const char *string, char *pattern, BOOL is_case_sensitive)
+BOOL mask_match_search(const char *string, const char *pattern, BOOL is_case_sensitive)
{
if (strcmp(string,"..") == 0)
string = ".";
/*******************************************************************
Simple case insensitive interface to a UNIX wildcard matcher.
+ Returns True if match, False if not.
*******************************************************************/
BOOL unix_wild_match(const char *pattern, const char *string)
if (strequal(p2,"*"))
return True;
- return unix_do_match(p2, s2) == 0;
+ return unix_do_match(p2, s2);
}
/**********************************************************************
- Converts a name to a fully qalified domain name.
+ Converts a name to a fully qualified domain name.
+ Returns True if lookup succeeded, False if not (then fqdn is set to name)
***********************************************************************/
-void name_to_fqdn(fstring fqdn, const char *name)
+BOOL name_to_fqdn(fstring fqdn, const char *name)
{
struct hostent *hp = sys_gethostbyname(name);
+
if ( hp && hp->h_name && *hp->h_name ) {
- DEBUG(10,("name_to_fqdn: lookup for %s -> %s.\n", name, hp->h_name));
- fstrcpy(fqdn,hp->h_name);
+ char *full = NULL;
+
+ /* find out if the fqdn is returned as an alias
+ * to cope with /etc/hosts files where the first
+ * name is not the fqdn but the short name */
+ if (hp->h_aliases && (! strchr_m(hp->h_name, '.'))) {
+ int i;
+ for (i = 0; hp->h_aliases[i]; i++) {
+ if (strchr_m(hp->h_aliases[i], '.')) {
+ full = hp->h_aliases[i];
+ break;
+ }
+ }
+ }
+ if (full && (StrCaseCmp(full, "localhost.localdomain") == 0)) {
+ DEBUG(1, ("WARNING: your /etc/hosts file may be broken!\n"));
+ DEBUGADD(1, (" Specifing the machine hostname for address 127.0.0.1 may lead\n"));
+ DEBUGADD(1, (" to Kerberos authentication problems as localhost.localdomain\n"));
+ DEBUGADD(1, (" may end up being used instead of the real machine FQDN.\n"));
+ full = hp->h_name;
+ }
+
+ if (!full) {
+ full = hp->h_name;
+ }
+
+ DEBUG(10,("name_to_fqdn: lookup for %s -> %s.\n", name, full));
+ fstrcpy(fqdn, full);
+ return True;
} else {
DEBUG(10,("name_to_fqdn: lookup for %s failed.\n", name));
fstrcpy(fqdn, name);
+ return False;
}
}
+/**********************************************************************
+ Extension to talloc_get_type: Abort on type mismatch
+***********************************************************************/
+
+void *talloc_check_name_abort(const void *ptr, const char *name)
+{
+ void *result;
+
+ result = talloc_check_name(ptr, name);
+ if (result != NULL)
+ return result;
+
+ DEBUG(0, ("Talloc type mismatch, expected %s, got %s\n",
+ name, talloc_get_name(ptr)));
+ smb_panic("talloc type mismatch");
+ /* Keep the compiler happy */
+ return NULL;
+}
+
+
#ifdef __INSURE__
/*******************************************************************
return ret;
}
#endif
+
+uint32 map_share_mode_to_deny_mode(uint32 share_access, uint32 private_options)
+{
+ switch (share_access & ~FILE_SHARE_DELETE) {
+ case FILE_SHARE_NONE:
+ return DENY_ALL;
+ case FILE_SHARE_READ:
+ return DENY_WRITE;
+ case FILE_SHARE_WRITE:
+ return DENY_READ;
+ case FILE_SHARE_READ|FILE_SHARE_WRITE:
+ return DENY_NONE;
+ }
+ if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) {
+ return DENY_DOS;
+ } else if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_FCB) {
+ return DENY_FCB;
+ }
+
+ return (uint32)-1;
+}
+
+pid_t procid_to_pid(const struct server_id *proc)
+{
+ return proc->pid;
+}
+
+static uint32 my_vnn = NONCLUSTER_VNN;
+
+void set_my_vnn(uint32 vnn)
+{
+ DEBUG(10, ("vnn pid %d = %u\n", (int)sys_getpid(), (unsigned int)vnn));
+ my_vnn = vnn;
+}
+
+uint32 get_my_vnn(void)
+{
+ return my_vnn;
+}
+
+struct server_id pid_to_procid(pid_t pid)
+{
+ struct server_id result;
+ result.pid = pid;
+#ifdef CLUSTER_SUPPORT
+ result.vnn = my_vnn;
+#endif
+ return result;
+}
+
+struct server_id procid_self(void)
+{
+ return pid_to_procid(sys_getpid());
+}
+
+struct server_id server_id_self(void)
+{
+ return procid_self();
+}
+
+BOOL procid_equal(const struct server_id *p1, const struct server_id *p2)
+{
+ if (p1->pid != p2->pid)
+ return False;
+#ifdef CLUSTER_SUPPORT
+ if (p1->vnn != p2->vnn)
+ return False;
+#endif
+ return True;
+}
+
+BOOL cluster_id_equal(const struct server_id *id1,
+ const struct server_id *id2)
+{
+ return procid_equal(id1, id2);
+}
+
+BOOL procid_is_me(const struct server_id *pid)
+{
+ if (pid->pid != sys_getpid())
+ return False;
+#ifdef CLUSTER_SUPPORT
+ if (pid->vnn != my_vnn)
+ return False;
+#endif
+ return True;
+}
+
+struct server_id interpret_pid(const char *pid_string)
+{
+#ifdef CLUSTER_SUPPORT
+ unsigned int vnn, pid;
+ struct server_id result;
+ if (sscanf(pid_string, "%u:%u", &vnn, &pid) == 2) {
+ result.vnn = vnn;
+ result.pid = pid;
+ }
+ else if (sscanf(pid_string, "%u", &pid) == 1) {
+ result.vnn = NONCLUSTER_VNN;
+ result.pid = pid;
+ }
+ else {
+ result.vnn = NONCLUSTER_VNN;
+ result.pid = -1;
+ }
+ return result;
+#else
+ return pid_to_procid(atoi(pid_string));
+#endif
+}
+
+char *procid_str(TALLOC_CTX *mem_ctx, const struct server_id *pid)
+{
+ fstring str;
+#ifdef CLUSTER_SUPPORT
+ if (pid->vnn == NONCLUSTER_VNN) {
+ fstr_sprintf(str, "%d", (int)pid->pid);
+ }
+ else {
+ fstr_sprintf(str, "%u:%d", (unsigned)pid->vnn, (int)pid->pid);
+ }
+#else
+ fstr_sprintf(str, "%d", (int)pid->pid);
+#endif
+ return talloc_strdup(mem_ctx, str);
+}
+
+char *procid_str_static(const struct server_id *pid)
+{
+ return procid_str(talloc_tos(), pid);
+}
+
+BOOL procid_valid(const struct server_id *pid)
+{
+ return (pid->pid != -1);
+}
+
+BOOL procid_is_local(const struct server_id *pid)
+{
+#ifdef CLUSTER_SUPPORT
+ return pid->vnn == my_vnn;
+#else
+ return True;
+#endif
+}
+
+int this_is_smp(void)
+{
+#if defined(HAVE_SYSCONF)
+
+#if defined(SYSCONF_SC_NPROC_ONLN)
+ return (sysconf(_SC_NPROC_ONLN) > 1) ? 1 : 0;
+#elif defined(SYSCONF_SC_NPROCESSORS_ONLN)
+ return (sysconf(_SC_NPROCESSORS_ONLN) > 1) ? 1 : 0;
+#else
+ return 0;
+#endif
+
+#else
+ return 0;
+#endif
+}
+
+/****************************************************************
+ Check if an offset into a buffer is safe.
+ If this returns True it's safe to indirect into the byte at
+ pointer ptr+off.
+****************************************************************/
+
+BOOL is_offset_safe(const char *buf_base, size_t buf_len, char *ptr, size_t off)
+{
+ const char *end_base = buf_base + buf_len;
+ char *end_ptr = ptr + off;
+
+ if (!buf_base || !ptr) {
+ return False;
+ }
+
+ if (end_base < buf_base || end_ptr < ptr) {
+ return False; /* wrap. */
+ }
+
+ if (end_ptr < end_base) {
+ return True;
+ }
+ return False;
+}
+
+/****************************************************************
+ Return a safe pointer into a buffer, or NULL.
+****************************************************************/
+
+char *get_safe_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
+{
+ return is_offset_safe(buf_base, buf_len, ptr, off) ?
+ ptr + off : NULL;
+}
+
+/****************************************************************
+ Return a safe pointer into a string within a buffer, or NULL.
+****************************************************************/
+
+char *get_safe_str_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
+{
+ if (!is_offset_safe(buf_base, buf_len, ptr, off)) {
+ return NULL;
+ }
+ /* Check if a valid string exists at this offset. */
+ if (skip_string(buf_base,buf_len, ptr + off) == NULL) {
+ return NULL;
+ }
+ return ptr + off;
+}
+
+/****************************************************************
+ Return an SVAL at a pointer, or failval if beyond the end.
+****************************************************************/
+
+int get_safe_SVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
+{
+ /*
+ * Note we use off+1 here, not off+2 as SVAL accesses ptr[0] and ptr[1],
+ * NOT ptr[2].
+ */
+ if (!is_offset_safe(buf_base, buf_len, ptr, off+1)) {
+ return failval;
+ }
+ return SVAL(ptr,off);
+}
+
+/****************************************************************
+ Return an IVAL at a pointer, or failval if beyond the end.
+****************************************************************/
+
+int get_safe_IVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
+{
+ /*
+ * Note we use off+3 here, not off+4 as IVAL accesses
+ * ptr[0] ptr[1] ptr[2] ptr[3] NOT ptr[4].
+ */
+ if (!is_offset_safe(buf_base, buf_len, ptr, off+3)) {
+ return failval;
+ }
+ return IVAL(ptr,off);
+}
+
+#if 0
+
+Disable these now we have checked all code paths and ensured
+NULL returns on zero request. JRA.
+
+/****************************************************************
+ talloc wrapper functions that guarentee a null pointer return
+ if size == 0.
+****************************************************************/
+
+#ifndef MAX_TALLOC_SIZE
+#define MAX_TALLOC_SIZE 0x10000000
+#endif
+
+/*
+ * talloc and zero memory.
+ * - returns NULL if size is zero.
+ */
+
+void *_talloc_zero_zeronull(const void *ctx, size_t size, const char *name)
+{
+ void *p;
+
+ if (size == 0) {
+ return NULL;
+ }
+
+ p = talloc_named_const(ctx, size, name);
+
+ if (p) {
+ memset(p, '\0', size);
+ }
+
+ return p;
+}
+
+/*
+ * memdup with a talloc.
+ * - returns NULL if size is zero.
+ */
+
+void *_talloc_memdup_zeronull(const void *t, const void *p, size_t size, const char *name)
+{
+ void *newp;
+
+ if (size == 0) {
+ return NULL;
+ }
+
+ newp = talloc_named_const(t, size, name);
+ if (newp) {
+ memcpy(newp, p, size);
+ }
+
+ return newp;
+}
+
+/*
+ * alloc an array, checking for integer overflow in the array size.
+ * - returns NULL if count or el_size are zero.
+ */
+
+void *_talloc_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
+{
+ if (count >= MAX_TALLOC_SIZE/el_size) {
+ return NULL;
+ }
+
+ if (el_size == 0 || count == 0) {
+ return NULL;
+ }
+
+ return talloc_named_const(ctx, el_size * count, name);
+}
+
+/*
+ * alloc an zero array, checking for integer overflow in the array size
+ * - returns NULL if count or el_size are zero.
+ */
+
+void *_talloc_zero_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
+{
+ if (count >= MAX_TALLOC_SIZE/el_size) {
+ return NULL;
+ }
+
+ if (el_size == 0 || count == 0) {
+ return NULL;
+ }
+
+ return _talloc_zero(ctx, el_size * count, name);
+}
+
+/*
+ * Talloc wrapper that returns NULL if size == 0.
+ */
+void *talloc_zeronull(const void *context, size_t size, const char *name)
+{
+ if (size == 0) {
+ return NULL;
+ }
+ return talloc_named_const(context, size, name);
+}
+#endif
git.samba.org / samba.git / blobdiff