diff options
| author | Dmitry V. Levin <ldv@altlinux.org> | 2014-01-24 23:53:09 +0000 |
|---|---|---|
| committer | Dmitry V. Levin <ldv@altlinux.org> | 2014-01-27 13:41:26 +0000 |
| commit | 154c00e1a480d2bac7e8aba3b13888eb909f8e7f (patch) | |
| tree | bcfb6b8d16b22566f4cc492e028933d6e684a9b6 /modules/pam_userdb | |
| parent | 57a1e2b274d0a6376d92ada9926e5c5741e7da20 (diff) | |
Fix gratuitous use of strdup and x_strdup
There is no need to copy strings passed as arguments to execve,
the only potentially noticeable effect of using strdup/x_strdup
would be a malformed argument list in case of memory allocation error.
Also, x_strdup, being a thin wrapper around strdup, is of no benefit
when its argument is known to be non-NULL, and should not be used in
such cases.
* modules/pam_cracklib/pam_cracklib.c (password_check): Use strdup
instead of x_strdup, the latter is of no benefit in this case.
* modules/pam_ftp/pam_ftp.c (lookup): Likewise.
* modules/pam_userdb/pam_userdb.c (user_lookup): Likewise.
* modules/pam_userdb/pam_userdb.h (x_strdup): Remove.
* modules/pam_mkhomedir/pam_mkhomedir.c (create_homedir): Do not use
x_strdup for strings passed as arguments to execve.
* modules/pam_unix/pam_unix_acct.c (_unix_run_verify_binary): Likewise.
* modules/pam_unix/pam_unix_passwd.c (_unix_run_update_binary): Likewise.
* modules/pam_unix/support.c (_unix_run_helper_binary): Likewise.
(_unix_verify_password): Use strdup instead of x_strdup, the latter
is of no benefit in this case.
* modules/pam_xauth/pam_xauth.c (run_coprocess): Do not use strdup for
strings passed as arguments to execv.
Diffstat (limited to 'modules/pam_userdb')
| -rw-r--r-- | modules/pam_userdb/pam_userdb.c | 2 | ||||
| -rw-r--r-- | modules/pam_userdb/pam_userdb.h | 3 |
2 files changed, 1 insertions, 4 deletions
diff --git a/modules/pam_userdb/pam_userdb.c b/modules/pam_userdb/pam_userdb.c index ff040e6f..ba36ebf2 100644 --- a/modules/pam_userdb/pam_userdb.c +++ b/modules/pam_userdb/pam_userdb.c @@ -184,7 +184,7 @@ user_lookup (pam_handle_t *pamh, const char *database, const char *cryptmode, else key.dsize = strlen(key.dptr); } else { - key.dptr = x_strdup(user); + key.dptr = strdup(user); key.dsize = strlen(user); } diff --git a/modules/pam_userdb/pam_userdb.h b/modules/pam_userdb/pam_userdb.h index 3cd8fee0..86e9b47f 100644 --- a/modules/pam_userdb/pam_userdb.h +++ b/modules/pam_userdb/pam_userdb.h @@ -15,9 +15,6 @@ #define PAM_USE_FPASS_ARG 0x0040 #define PAM_TRY_FPASS_ARG 0x0080 -/* Useful macros */ -#define x_strdup(s) ( (s) ? strdup(s):NULL ) - /* The name of the module we are compiling */ #ifndef MODULE_NAME #define MODULE_NAME "pam_userdb" |