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Use safer allocation macros

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Use of these macros, apart from the benefits mentioned in the commit
that adds the macros, has some other good side effects:

-  Consistency in getting the size of the object from sizeof(type),
   instead of a mix of sizeof(type) sometimes and sizeof(*p) other
   times.

-  More readable code: no casts, and no sizeof(), so also shorter lines
   that we don't need to cut.

-  Consistency in using array allocation calls for allocations of arrays
   of objects, even when the object size is 1.

Cc: Valentin V. Bartenev <vbartenev@gmail.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
This commit is contained in:
Alejandro Colomar
2023-02-04 22:41:18 +01:00
committed by Serge Hallyn
parent 6e58c12752
commit efbbcade43
44 changed files with 196 additions and 118 deletions
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16
libmisc/prefix_flag.c
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@@ -11,7 +11,9 @@
#include <stdio.h>
#include <assert.h>
#include "defines.h"
#include "alloc.h"
#include "prototypes.h"
/*@-exitarg@*/
#include "exitcodes.h"
@@ -95,18 +97,18 @@ extern const char* process_prefix_flag (const char* short_opt, int argc, char **
}
size_t len;
len = strlen(prefix) + strlen(PASSWD_FILE) + 2;
passwd_db_file = xmalloc(len);
passwd_db_file = XMALLOCARRAY(len, char);
snprintf(passwd_db_file, len, "%s/%s", prefix, PASSWD_FILE);
pw_setdbname(passwd_db_file);
len = strlen(prefix) + strlen(GROUP_FILE) + 2;
group_db_file = xmalloc(len);
group_db_file = XMALLOCARRAY(len, char);
snprintf(group_db_file, len, "%s/%s", prefix, GROUP_FILE);
gr_setdbname(group_db_file);
#ifdef SHADOWGRP
len = strlen(prefix) + strlen(SGROUP_FILE) + 2;
sgroup_db_file = xmalloc(len);
sgroup_db_file = XMALLOCARRAY(len, char);
snprintf(sgroup_db_file, len, "%s/%s", prefix, SGROUP_FILE);
sgr_setdbname(sgroup_db_file);
#endif
@@ -115,18 +117,18 @@ extern const char* process_prefix_flag (const char* short_opt, int argc, char **
#endif
len = strlen(prefix) + strlen(SHADOW_FILE) + 2;
spw_db_file = xmalloc(len);
spw_db_file = XMALLOCARRAY(len, char);
snprintf(spw_db_file, len, "%s/%s", prefix, SHADOW_FILE);
spw_setdbname(spw_db_file);
#ifdef ENABLE_SUBIDS
len = strlen(prefix) + strlen("/etc/subuid") + 2;
suid_db_file = xmalloc(len);
suid_db_file = XMALLOCARRAY(len, char);
snprintf(suid_db_file, len, "%s/%s", prefix, "/etc/subuid");
sub_uid_setdbname(suid_db_file);
len = strlen(prefix) + strlen("/etc/subgid") + 2;
sgid_db_file = xmalloc(len);
sgid_db_file = XMALLOCARRAY(len, char);
snprintf(sgid_db_file, len, "%s/%s", prefix, "/etc/subgid");
sub_gid_setdbname(sgid_db_file);
#endif
@@ -135,7 +137,7 @@ extern const char* process_prefix_flag (const char* short_opt, int argc, char **
setdef_config_file(prefix);
#else
len = strlen(prefix) + strlen("/etc/login.defs") + 2;
def_conf_file = xmalloc(len);
def_conf_file = XMALLOCARRAY(len, char);
snprintf(def_conf_file, len, "%s/%s", prefix, "/etc/login.defs");
setdef_config_file(def_conf_file);
#endif