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-rw-r--r--source3/lib/charcnv.c25
-rw-r--r--source3/lib/ldap_escape.c7
-rw-r--r--source3/lib/sysacls.c11
-rw-r--r--source3/lib/system_smbd.c9
-rw-r--r--source3/lib/util.c99
-rw-r--r--source3/lib/util_file.c23
-rw-r--r--source3/lib/util_sid.c8
-rw-r--r--source3/lib/util_str.c34
-rw-r--r--source3/lib/wins_srv.c3
9 files changed, 125 insertions, 94 deletions
diff --git a/source3/lib/charcnv.c b/source3/lib/charcnv.c
index c4eeab135e..ae04fd9ffb 100644
--- a/source3/lib/charcnv.c
+++ b/source3/lib/charcnv.c
@@ -537,19 +537,17 @@ size_t convert_string_allocate(TALLOC_CTX *ctx, charset_t from, charset_t to,
destlen = destlen * 2;
}
- if (ctx)
+ if (ctx) {
ob = (char *)TALLOC_REALLOC(ctx, ob, destlen);
- else
+ } else {
ob = (char *)SMB_REALLOC(ob, destlen);
+ }
if (!ob) {
DEBUG(0, ("convert_string_allocate: realloc failed!\n"));
- if (!ctx)
- SAFE_FREE(outbuf);
return (size_t)-1;
- } else {
- outbuf = ob;
}
+ outbuf = ob;
i_len = srclen;
o_len = destlen;
@@ -587,17 +585,18 @@ size_t convert_string_allocate(TALLOC_CTX *ctx, charset_t from, charset_t to,
out:
destlen = destlen - o_len;
- if (ctx)
- *dest = (char *)TALLOC_REALLOC(ctx,ob,destlen);
- else
- *dest = (char *)SMB_REALLOC(ob,destlen);
- if (destlen && !*dest) {
+ if (ctx) {
+ ob = (char *)TALLOC_REALLOC(ctx,ob,destlen);
+ } else {
+ ob = (char *)SMB_REALLOC(ob,destlen);
+ }
+
+ if (destlen && !ob) {
DEBUG(0, ("convert_string_allocate: out of memory!\n"));
- if (!ctx)
- SAFE_FREE(ob);
return (size_t)-1;
}
+ *dest = ob;
return destlen;
use_as_is:
diff --git a/source3/lib/ldap_escape.c b/source3/lib/ldap_escape.c
index 6c4e8b8c83..3feb0e0c44 100644
--- a/source3/lib/ldap_escape.c
+++ b/source3/lib/ldap_escape.c
@@ -37,7 +37,6 @@ char *escape_ldap_string_alloc(const char *s)
{
size_t len = strlen(s)+1;
char *output = SMB_MALLOC(len);
- char *output_tmp;
const char *sub;
int i = 0;
char *p = output;
@@ -65,12 +64,10 @@ char *escape_ldap_string_alloc(const char *s)
if (sub) {
len = len + 3;
- output_tmp = SMB_REALLOC(output, len);
- if (!output_tmp) {
- SAFE_FREE(output);
+ output = SMB_REALLOC(output, len);
+ if (!output) {
return NULL;
}
- output = output_tmp;
p = &output[i];
strncpy (p, sub, 3);
diff --git a/source3/lib/sysacls.c b/source3/lib/sysacls.c
index e7bd288f6e..61975264fd 100644
--- a/source3/lib/sysacls.c
+++ b/source3/lib/sysacls.c
@@ -689,12 +689,8 @@ char *sys_acl_to_text(SMB_ACL_T acl_d, ssize_t *len_p)
* for each entry still to be processed
*/
if ((len + nbytes) > maxlen) {
- char *oldtext = text;
-
maxlen += nbytes + 20 * (acl_d->count - i);
-
- if ((text = SMB_REALLOC(oldtext, maxlen)) == NULL) {
- SAFE_FREE(oldtext);
+ if ((text = SMB_REALLOC(text, maxlen)) == NULL) {
errno = ENOMEM;
return NULL;
}
@@ -1320,11 +1316,8 @@ char *sys_acl_to_text(SMB_ACL_T acl_d, ssize_t *len_p)
* for each entry still to be processed
*/
if ((len + nbytes) > maxlen) {
- char *oldtext = text;
-
maxlen += nbytes + 20 * (acl_d->count - i);
-
- if ((text = SMB_REALLOC(oldtext, maxlen)) == NULL) {
+ if ((text = SMB_REALLOC(text, maxlen)) == NULL) {
free(oldtext);
errno = ENOMEM;
return NULL;
diff --git a/source3/lib/system_smbd.c b/source3/lib/system_smbd.c
index 081a07c019..c627ae6270 100644
--- a/source3/lib/system_smbd.c
+++ b/source3/lib/system_smbd.c
@@ -166,15 +166,10 @@ BOOL getgroups_unix_user(TALLOC_CTX *mem_ctx, const char *user,
}
if (sys_getgrouplist(user, primary_gid, temp_groups, &max_grp) == -1) {
- gid_t *groups_tmp;
-
- groups_tmp = SMB_REALLOC_ARRAY(temp_groups, gid_t, max_grp);
-
- if (!groups_tmp) {
- SAFE_FREE(temp_groups);
+ temp_groups = SMB_REALLOC_ARRAY(temp_groups, gid_t, max_grp);
+ if (!temp_groups) {
return False;
}
- temp_groups = groups_tmp;
if (sys_getgrouplist(user, primary_gid,
temp_groups, &max_grp) == -1) {
diff --git a/source3/lib/util.c b/source3/lib/util.c
index d4443a6480..758ebfd27d 100644
--- a/source3/lib/util.c
+++ b/source3/lib/util.c
@@ -291,13 +291,15 @@ void add_gid_to_array_unique(TALLOC_CTX *mem_ctx, gid_t gid,
return;
}
- if (mem_ctx != NULL)
+ if (mem_ctx != NULL) {
*gids = TALLOC_REALLOC_ARRAY(mem_ctx, *gids, gid_t, *num_gids+1);
- else
+ } else {
*gids = SMB_REALLOC_ARRAY(*gids, gid_t, *num_gids+1);
+ }
- if (*gids == NULL)
+ if (*gids == NULL) {
return;
+ }
(*gids)[*num_gids] = gid;
*num_gids += 1;
@@ -342,14 +344,10 @@ const char *get_numlist(const char *p, uint32 **num, int *count)
(*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++;
@@ -941,32 +939,68 @@ void *calloc_array(size_t size, size_t nmemb)
/****************************************************************************
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);
}
@@ -975,23 +1009,28 @@ void *Realloc(void *p,size_t size)
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 keep_old_on_error)
{
if (count >= MAX_ALLOC_SIZE/el_size) {
+ if (!keep_old_on_error) {
+ SAFE_FREE(p);
+ }
return NULL;
}
- return Realloc(p,el_size*count);
+ return Realloc(p, el_size*count, keep_old_on_error);
}
/****************************************************************************
- (Hopefully) efficient array append
+ (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)
{
- if (*array_size < 0)
+ if (*array_size < 0) {
return;
+ }
if (*array == NULL) {
if (*array_size == 0) {
@@ -1002,13 +1041,15 @@ void add_to_large_array(TALLOC_CTX *mem_ctx, size_t element_size,
goto error;
}
- if (mem_ctx != NULL)
+ if (mem_ctx != NULL) {
*array = TALLOC(mem_ctx, element_size * (*array_size));
- else
+ } else {
*array = SMB_MALLOC(element_size * (*array_size));
+ }
- if (*array == NULL)
+ if (*array == NULL) {
goto error;
+ }
}
if (*num_elements == *array_size) {
@@ -1018,15 +1059,17 @@ void add_to_large_array(TALLOC_CTX *mem_ctx, size_t element_size,
goto error;
}
- if (mem_ctx != NULL)
+ if (mem_ctx != NULL) {
*array = TALLOC_REALLOC(mem_ctx, *array,
element_size * (*array_size));
- else
+ } else {
*array = SMB_REALLOC(*array,
element_size * (*array_size));
+ }
- if (*array == NULL)
+ if (*array == NULL) {
goto error;
+ }
}
memcpy((char *)(*array) + element_size*(*num_elements),
diff --git a/source3/lib/util_file.c b/source3/lib/util_file.c
index 53a9bc9b41..06008886c0 100644
--- a/source3/lib/util_file.c
+++ b/source3/lib/util_file.c
@@ -322,16 +322,11 @@ char *fgets_slash(char *s2,int maxlen,XFILE *f)
}
if (!s2 && len > maxlen-3) {
- char *t;
-
maxlen *= 2;
- t = (char *)SMB_REALLOC(s,maxlen);
- if (!t) {
+ s = (char *)SMB_REALLOC(s,maxlen);
+ if (!s) {
DEBUG(0,("fgets_slash: failed to expand buffer!\n"));
- SAFE_FREE(s);
return(NULL);
- } else {
- s = t;
}
}
}
@@ -345,7 +340,7 @@ char *fgets_slash(char *s2,int maxlen,XFILE *f)
char *file_pload(char *syscmd, size_t *size)
{
int fd, n;
- char *p, *tp;
+ char *p;
pstring buf;
size_t total;
@@ -358,19 +353,19 @@ char *file_pload(char *syscmd, size_t *size)
total = 0;
while ((n = read(fd, buf, sizeof(buf))) > 0) {
- tp = SMB_REALLOC(p, total + n + 1);
- if (!tp) {
+ p = SMB_REALLOC(p, total + n + 1);
+ if (!p) {
DEBUG(0,("file_pload: failed to expand buffer!\n"));
close(fd);
- SAFE_FREE(p);
return NULL;
- } else {
- p = tp;
}
memcpy(p+total, buf, n);
total += n;
}
- if (p) p[total] = 0;
+
+ if (p) {
+ p[total] = 0;
+ }
/* FIXME: Perhaps ought to check that the command completed
* successfully (returned 0); if not the data may be
diff --git a/source3/lib/util_sid.c b/source3/lib/util_sid.c
index c7f9dc2fdb..3be52dd9f7 100644
--- a/source3/lib/util_sid.c
+++ b/source3/lib/util_sid.c
@@ -563,14 +563,16 @@ DOM_SID *sid_dup_talloc(TALLOC_CTX *ctx, const DOM_SID *src)
void add_sid_to_array(TALLOC_CTX *mem_ctx, const DOM_SID *sid,
DOM_SID **sids, size_t *num)
{
- if (mem_ctx != NULL)
+ if (mem_ctx != NULL) {
*sids = TALLOC_REALLOC_ARRAY(mem_ctx, *sids, DOM_SID,
(*num)+1);
- else
+ } else {
*sids = SMB_REALLOC_ARRAY(*sids, DOM_SID, (*num)+1);
+ }
- if (*sids == NULL)
+ if (*sids == NULL) {
return;
+ }
sid_copy(&((*sids)[*num]), sid);
*num += 1;
diff --git a/source3/lib/util_str.c b/source3/lib/util_str.c
index e799556cd1..f1ae9a472a 100644
--- a/source3/lib/util_str.c
+++ b/source3/lib/util_str.c
@@ -1049,14 +1049,13 @@ char *realloc_string_sub(char *string, const char *pattern,
while ((p = strstr_m(s,pattern))) {
if (ld > 0) {
int offset = PTR_DIFF(s,string);
- char *t = SMB_REALLOC(string, ls + ld + 1);
- if (!t) {
+ string = SMB_REALLOC(string, ls + ld + 1);
+ if (!string) {
DEBUG(0, ("realloc_string_sub: out of memory!\n"));
SAFE_FREE(in);
return NULL;
}
- string = t;
- p = t + offset + (p - s);
+ p = string + offset + (p - s);
}
if (li != lp) {
memmove(p+li,p+lp,strlen(p+lp)+1);
@@ -1119,15 +1118,14 @@ char *talloc_string_sub(TALLOC_CTX *mem_ctx, const char *src,
while ((p = strstr_m(s,pattern))) {
if (ld > 0) {
int offset = PTR_DIFF(s,string);
- char *t = TALLOC_REALLOC(mem_ctx, string, ls + ld + 1);
- if (!t) {
+ string = TALLOC_REALLOC(mem_ctx, string, ls + ld + 1);
+ if (!string) {
DEBUG(0, ("talloc_string_sub: out of "
"memory!\n"));
SAFE_FREE(in);
return NULL;
}
- string = t;
- p = t + offset + (p - s);
+ p = string + offset + (p - s);
}
if (li != lp) {
memmove(p+li,p+lp,strlen(p+lp)+1);
@@ -1703,7 +1701,9 @@ static char **str_list_make_internal(TALLOC_CTX *mem_ctx, const char *string, co
if (mem_ctx) {
rlist = TALLOC_REALLOC_ARRAY(mem_ctx, list, char *, lsize +1);
} else {
- rlist = SMB_REALLOC_ARRAY(list, char *, lsize +1);
+ /* We need to keep the old list on error so we can free the elements
+ if the realloc fails. */
+ rlist = SMB_REALLOC_ARRAY_KEEP_OLD_ON_ERROR(list, char *, lsize +1);
}
if (!rlist) {
DEBUG(0,("str_list_make: Unable to allocate memory"));
@@ -1714,8 +1714,9 @@ static char **str_list_make_internal(TALLOC_CTX *mem_ctx, const char *string, co
SAFE_FREE(s);
}
return NULL;
- } else
+ } else {
list = rlist;
+ }
memset (&list[num], 0, ((sizeof(char**)) * (S_LIST_ABS +1)));
}
@@ -1773,7 +1774,7 @@ BOOL str_list_copy(char ***dest, const char **src)
while (src[num]) {
if (num == lsize) {
lsize += S_LIST_ABS;
- rlist = SMB_REALLOC_ARRAY(list, char *, lsize +1);
+ rlist = SMB_REALLOC_ARRAY_KEEP_OLD_ON_ERROR(list, char *, lsize +1);
if (!rlist) {
DEBUG(0,("str_list_copy: Unable to re-allocate memory"));
str_list_free(&list);
@@ -2266,8 +2267,9 @@ void string_append(char **left, const char *right)
*left = SMB_REALLOC(*left, new_len);
}
- if (*left == NULL)
+ if (*left == NULL) {
return;
+ }
safe_strcat(*left, right, new_len-1);
}
@@ -2334,14 +2336,16 @@ void sprintf_append(TALLOC_CTX *mem_ctx, char **string, ssize_t *len,
}
if (increased) {
- if (mem_ctx != NULL)
+ if (mem_ctx != NULL) {
*string = TALLOC_REALLOC_ARRAY(mem_ctx, *string, char,
*bufsize);
- else
+ } else {
*string = SMB_REALLOC_ARRAY(*string, char, *bufsize);
+ }
- if (*string == NULL)
+ if (*string == NULL) {
goto error;
+ }
}
StrnCpy((*string)+(*len), newstr, ret);
diff --git a/source3/lib/wins_srv.c b/source3/lib/wins_srv.c
index c139f427ca..dbe4fceacc 100644
--- a/source3/lib/wins_srv.c
+++ b/source3/lib/wins_srv.c
@@ -245,6 +245,9 @@ char **wins_srv_tags(void)
/* add it to the list */
ret = SMB_REALLOC_ARRAY(ret, char *, count+2);
+ if (!ret) {
+ return NULL;
+ }
ret[count] = SMB_STRDUP(t_ip.tag);
if (!ret[count]) break;
count++;
generated by cgit (git 2.34.1) at 2024-12-03 19:24:58 +0000