diff options
Diffstat (limited to 'libpam')
| -rw-r--r-- | libpam/pam_modutil_priv.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/libpam/pam_modutil_priv.c b/libpam/pam_modutil_priv.c index a463e06a..cf0ce3ce 100644 --- a/libpam/pam_modutil_priv.c +++ b/libpam/pam_modutil_priv.c @@ -14,7 +14,9 @@ #include <syslog.h> #include <pwd.h> #include <grp.h> +#ifdef HAVE_SYS_FSUID_H #include <sys/fsuid.h> +#endif /* HAVE_SYS_FSUID_H */ /* * Two setfsuid() calls in a row are necessary to check @@ -22,17 +24,32 @@ */ static int change_uid(uid_t uid, uid_t *save) { +#ifdef HAVE_SYS_FSUID_H uid_t tmp = setfsuid(uid); if (save) *save = tmp; return (uid_t) setfsuid(uid) == uid ? 0 : -1; +#else + uid_t euid = geteuid(); + if (save) + *save = euid; + return setresuid(-1, uid, euid); +#endif } + static int change_gid(gid_t gid, gid_t *save) { +#ifdef HAVE_SYS_FSUID_H gid_t tmp = setfsgid(gid); if (save) *save = tmp; return (gid_t) setfsgid(gid) == gid ? 0 : -1; +#else + uid_t egid = getegid(); + if (save) + *save = egid; + return setresgid(-1, gid, egid); +#endif } static int cleanup(struct pam_modutil_privs *p) |