X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fsysusers%2Fsysusers.c;h=7820e849839079488e886cef61a2bd9f7b87478c;hp=ba20d949dc5b2aad24df5655980c1309cf07eb1f;hb=7f0a55d4325f7df91f91b3b818f61f97d78df14a;hpb=d5099efc47d4e6ac60816b5381a5f607ab03f06e

diff --git a/src/sysusers/sysusers.c b/src/sysusers/sysusers.c
index ba20d949d..7820e8498 100644
--- a/src/sysusers/sysusers.c
+++ b/src/sysusers/sysusers.c
@@ -67,15 +67,7 @@ typedef struct Item {
 
 static char *arg_root = NULL;
 
-static const char conf_file_dirs[] =
-        "/etc/sysusers.d\0"
-        "/run/sysusers.d\0"
-        "/usr/local/lib/sysusers.d\0"
-        "/usr/lib/sysusers.d\0"
-#ifdef HAVE_SPLIT_USR
-        "/lib/sysusers.d\0"
-#endif
-        ;
+static const char conf_file_dirs[] = CONF_DIRS_NULSTR("sysusers");
 
 static Hashmap *users = NULL, *groups = NULL;
 static Hashmap *todo_uids = NULL, *todo_gids = NULL;
@@ -241,7 +233,8 @@ static int make_backup(const char *target, const char *x) {
 
         ts[0] = st.st_atim;
         ts[1] = st.st_mtim;
-        futimens(fileno(dst), ts);
+        if (futimens(fileno(dst), ts) < 0)
+                log_warning("Failed to fix access and modification time of %s: %m", backup);
 
         if (rename(temp, backup) < 0)
                 goto fail;
@@ -353,6 +346,21 @@ static int putsgent_with_members(const struct sgrp *sg, FILE *gshadow) {
         return 0;
 }
 
+static int sync_rights(FILE *from, FILE *to) {
+        struct stat st;
+
+        if (fstat(fileno(from), &st) < 0)
+                return -errno;
+
+        if (fchmod(fileno(to), st.st_mode & 07777) < 0)
+                return -errno;
+
+        if (fchown(fileno(to), st.st_uid, st.st_gid) < 0)
+                return -errno;
+
+        return 0;
+}
+
 static int write_files(void) {
 
         _cleanup_fclose_ FILE *passwd = NULL, *group = NULL, *shadow = NULL, *gshadow = NULL;
@@ -372,15 +380,14 @@ static int write_files(void) {
                 if (r < 0)
                         goto finish;
 
-                if (fchmod(fileno(group), 0644) < 0) {
-                        r = -errno;
-                        goto finish;
-                }
-
                 original = fopen(group_path, "re");
                 if (original) {
                         struct group *gr;
 
+                        r = sync_rights(original, group);
+                        if (r < 0)
+                                goto finish;
+
                         errno = 0;
                         while ((gr = fgetgrent(original))) {
                                 /* Safety checks against name and GID
@@ -418,6 +425,9 @@ static int write_files(void) {
                 } else if (errno != ENOENT) {
                         r = -errno;
                         goto finish;
+                } else if (fchmod(fileno(group), 0644) < 0) {
+                        r = -errno;
+                        goto finish;
                 }
 
                 HASHMAP_FOREACH(i, todo_gids, iterator) {
@@ -449,15 +459,14 @@ static int write_files(void) {
                 if (r < 0)
                         goto finish;
 
-                if (fchmod(fileno(gshadow), 0000) < 0) {
-                        r = -errno;
-                        goto finish;
-                }
-
                 original = fopen(gshadow_path, "re");
                 if (original) {
                         struct sgrp *sg;
 
+                        r = sync_rights(original, gshadow);
+                        if (r < 0)
+                                goto finish;
+
                         errno = 0;
                         while ((sg = fgetsgent(original))) {
 
@@ -483,6 +492,9 @@ static int write_files(void) {
                 } else if (errno != ENOENT) {
                         r = -errno;
                         goto finish;
+                } else if (fchmod(fileno(gshadow), 0000) < 0) {
+                        r = -errno;
+                        goto finish;
                 }
 
                 HASHMAP_FOREACH(i, todo_gids, iterator) {
@@ -513,15 +525,14 @@ static int write_files(void) {
                 if (r < 0)
                         goto finish;
 
-                if (fchmod(fileno(passwd), 0644) < 0) {
-                        r = -errno;
-                        goto finish;
-                }
-
                 original = fopen(passwd_path, "re");
                 if (original) {
                         struct passwd *pw;
 
+                        r = sync_rights(original, passwd);
+                        if (r < 0)
+                                goto finish;
+
                         errno = 0;
                         while ((pw = fgetpwent(original))) {
 
@@ -552,6 +563,9 @@ static int write_files(void) {
                 } else if (errno != ENOENT) {
                         r = -errno;
                         goto finish;
+                } else if (fchmod(fileno(passwd), 0644) < 0) {
+                        r = -errno;
+                        goto finish;
                 }
 
                 HASHMAP_FOREACH(i, todo_uids, iterator) {
@@ -596,15 +610,14 @@ static int write_files(void) {
                 if (r < 0)
                         goto finish;
 
-                if (fchmod(fileno(shadow), 0000) < 0) {
-                        r = -errno;
-                        goto finish;
-                }
-
                 original = fopen(shadow_path, "re");
                 if (original) {
                         struct spwd *sp;
 
+                        r = sync_rights(original, shadow);
+                        if (r < 0)
+                                goto finish;
+
                         errno = 0;
                         while ((sp = fgetspent(original))) {
 
@@ -629,6 +642,9 @@ static int write_files(void) {
                 } else if (errno != ENOENT) {
                         r = -errno;
                         goto finish;
+                } else if (fchmod(fileno(shadow), 0000) < 0) {
+                        r = -errno;
+                        goto finish;
                 }
 
                 lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY);
@@ -796,8 +812,8 @@ static int root_stat(const char *p, struct stat *st) {
 static int read_id_from_file(Item *i, uid_t *_uid, gid_t *_gid) {
         struct stat st;
         bool found_uid = false, found_gid = false;
-        uid_t uid;
-        gid_t gid;
+        uid_t uid = 0;
+        gid_t gid = 0;
 
         assert(i);
 
@@ -1835,7 +1851,7 @@ int main(int argc, char *argv[]) {
 
         umask(0022);
 
-        r = label_init(NULL);
+        r = mac_selinux_init(NULL);
         if (r < 0) {
                 log_error("SELinux setup failed: %s", strerror(-r));
                 goto finish;