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=b889ed0536dd41b92232e554e6ec6cdaa1c955a6;hb=7f0a55d4325f7df91f91b3b818f61f97d78df14a;hpb=c46409021fa9d161c587c9e364ec629256265a75 diff --git a/src/sysusers/sysusers.c b/src/sysusers/sysusers.c index b889ed053..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; @@ -107,11 +99,11 @@ static int load_user_database(void) { if (!f) return errno == ENOENT ? 0 : -errno; - r = hashmap_ensure_allocated(&database_user, string_hash_func, string_compare_func); + r = hashmap_ensure_allocated(&database_user, &string_hash_ops); if (r < 0) return r; - r = hashmap_ensure_allocated(&database_uid, trivial_hash_func, trivial_compare_func); + r = hashmap_ensure_allocated(&database_uid, NULL); if (r < 0) return r; @@ -159,11 +151,11 @@ static int load_group_database(void) { if (!f) return errno == ENOENT ? 0 : -errno; - r = hashmap_ensure_allocated(&database_group, string_hash_func, string_compare_func); + r = hashmap_ensure_allocated(&database_group, &string_hash_ops); if (r < 0) return r; - r = hashmap_ensure_allocated(&database_gid, trivial_hash_func, trivial_compare_func); + r = hashmap_ensure_allocated(&database_gid, NULL); if (r < 0) return r; @@ -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); @@ -969,7 +985,7 @@ static int add_user(Item *i) { i->uid = search_uid; } - r = hashmap_ensure_allocated(&todo_uids, trivial_hash_func, trivial_compare_func); + r = hashmap_ensure_allocated(&todo_uids, NULL); if (r < 0) return log_oom(); @@ -1122,7 +1138,7 @@ static int add_group(Item *i) { i->gid = search_uid; } - r = hashmap_ensure_allocated(&todo_gids, trivial_hash_func, trivial_compare_func); + r = hashmap_ensure_allocated(&todo_gids, NULL); if (r < 0) return log_oom(); @@ -1210,7 +1226,7 @@ static int add_implicit(void) { if (!i) { _cleanup_(item_freep) Item *j = NULL; - r = hashmap_ensure_allocated(&groups, string_hash_func, string_compare_func); + r = hashmap_ensure_allocated(&groups, &string_hash_ops); if (r < 0) return log_oom(); @@ -1237,7 +1253,7 @@ static int add_implicit(void) { if (!i) { _cleanup_(item_freep) Item *j = NULL; - r = hashmap_ensure_allocated(&users, string_hash_func, string_compare_func); + r = hashmap_ensure_allocated(&users, &string_hash_ops); if (r < 0) return log_oom(); @@ -1542,7 +1558,7 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) { return -EINVAL; } - r = hashmap_ensure_allocated(&members, string_hash_func, string_compare_func); + r = hashmap_ensure_allocated(&members, &string_hash_ops); if (r < 0) return log_oom(); @@ -1584,7 +1600,7 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) { return -EINVAL; } - r = hashmap_ensure_allocated(&users, string_hash_func, string_compare_func); + r = hashmap_ensure_allocated(&users, &string_hash_ops); if (r < 0) return log_oom(); @@ -1634,7 +1650,7 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) { return -EINVAL; } - r = hashmap_ensure_allocated(&groups, string_hash_func, string_compare_func); + r = hashmap_ensure_allocated(&groups, &string_hash_ops); if (r < 0) return log_oom(); @@ -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;