From a5e132e5af2a1b5ece95c1f66e398cdeea10ceff Mon Sep 17 00:00:00 2001 From: Tobias Stoeckmann Date: Sun, 12 Nov 2023 17:41:49 +0100 Subject: pam_mkhomedir: return error if link creation fails Treat symlink creation failures the same way as failures when creating files and directories. Signed-off-by: Tobias Stoeckmann --- modules/pam_mkhomedir/mkhomedir_helper.c | 35 +++++++++++++++++++++----------- 1 file changed, 23 insertions(+), 12 deletions(-) diff --git a/modules/pam_mkhomedir/mkhomedir_helper.c b/modules/pam_mkhomedir/mkhomedir_helper.c index 36d9502e..fd7708bb 100644 --- a/modules/pam_mkhomedir/mkhomedir_helper.c +++ b/modules/pam_mkhomedir/mkhomedir_helper.c @@ -151,21 +151,32 @@ create_homedir(const struct passwd *pwd, mode_t dir_mode, #endif if (pointedlen >= 0) { - if(symlink(pointed, newdest) == 0) + if(symlink(pointed, newdest) != 0) { - if (lchown(newdest, pwd->pw_uid, pwd->pw_gid) != 0) - { - pam_syslog(NULL, LOG_DEBUG, - "unable to change perms on link %s: %m", newdest); - closedir(d); + pam_syslog(NULL, LOG_DEBUG, + "unable to create link %s: %m", newdest); + closedir(d); #ifndef PATH_MAX - free(pointed); + free(pointed); +#endif + free(newsource); + free(newdest); + retval = PAM_PERM_DENIED; + goto go_out; + } + + if (lchown(newdest, pwd->pw_uid, pwd->pw_gid) != 0) + { + pam_syslog(NULL, LOG_DEBUG, + "unable to change perms on link %s: %m", newdest); + closedir(d); +#ifndef PATH_MAX + free(pointed); #endif - free(newsource); - free(newdest); - retval = PAM_PERM_DENIED; - goto go_out; - } + free(newsource); + free(newdest); + retval = PAM_PERM_DENIED; + goto go_out; } #ifndef PATH_MAX free(pointed); -- cgit v1.2.3