X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Ffstab-generator%2Ffstab-generator.c;h=4eaa52d1c248f23e7678cec69d18f7af123dfcb5;hp=1a1fe8605f69a573a60e440351f1ace267bf05ae;hb=0c17fbce55a9a2ca48318a918adce4c58ae79d98;hpb=3d22d1ab57bf44c92e4d9ca95d9728105dd3fb0d diff --git a/src/fstab-generator/fstab-generator.c b/src/fstab-generator/fstab-generator.c index 1a1fe8605..4eaa52d1c 100644 --- a/src/fstab-generator/fstab-generator.c +++ b/src/fstab-generator/fstab-generator.c @@ -199,15 +199,26 @@ static bool mount_in_initrd(struct mntent *me) { streq(me->mnt_dir, "/usr"); } -static int add_mount(const char *what, const char *where, const char *type, const char *opts, - int passno, bool noauto, bool nofail, bool automount, bool isbind, bool isnetwork, - const char *source) { +static int add_mount( + const char *what, + const char *where, + const char *type, + const char *opts, + int passno, + bool noauto, + bool nofail, + bool automount, + bool isbind, + const char *pre, + const char *pre2, + const char *online, + const char *post, + const char *source) { char _cleanup_free_ *name = NULL, *unit = NULL, *lnk = NULL, *device = NULL, *automount_name = NULL, *automount_unit = NULL; FILE _cleanup_fclose_ *f = NULL; int r; - const char *post, *pre; assert(what); assert(where); @@ -227,14 +238,6 @@ static int add_mount(const char *what, const char *where, const char *type, cons mount_point_ignore(where)) return 0; - if (isnetwork) { - post = SPECIAL_REMOTE_FS_TARGET; - pre = SPECIAL_REMOTE_FS_PRE_TARGET; - } else { - post = SPECIAL_LOCAL_FS_TARGET; - pre = SPECIAL_LOCAL_FS_PRE_TARGET; - } - name = unit_name_from_path(where, ".mount"); if (!name) return log_oom(); @@ -259,17 +262,30 @@ static int add_mount(const char *what, const char *where, const char *type, cons "DefaultDependencies=no\n", source); - if (!path_equal(where, "/")) + if (!path_equal(where, "/")) { + if (pre) + fprintf(f, + "After=%s\n", + pre); + + if (pre2) + fprintf(f, + "After=%s\n", + pre2); + + if (online) + fprintf(f, + "After=%s\n" + "Wants=%s\n", + online, + online); + fprintf(f, - "After=%s\n" - "Wants=%s\n" "Conflicts=" SPECIAL_UMOUNT_TARGET "\n" - "Before=" SPECIAL_UMOUNT_TARGET "\n", - pre, - pre); - + "Before=" SPECIAL_UMOUNT_TARGET "\n"); + } - if (!noauto && !nofail && !automount) + if (post && !noauto && !nofail && !automount) fprintf(f, "Before=%s\n", post); @@ -299,14 +315,16 @@ static int add_mount(const char *what, const char *where, const char *type, cons } if (!noauto) { - lnk = strjoin(arg_dest, "/", post, nofail || automount ? ".wants/" : ".requires/", name, NULL); - if (!lnk) - return log_oom(); + if (post) { + lnk = strjoin(arg_dest, "/", post, nofail || automount ? ".wants/" : ".requires/", name, NULL); + if (!lnk) + return log_oom(); - mkdir_parents_label(lnk, 0755); - if (symlink(unit, lnk) < 0) { - log_error("Failed to create symlink %s: %m", lnk); - return -errno; + mkdir_parents_label(lnk, 0755); + if (symlink(unit, lnk) < 0) { + log_error("Failed to create symlink %s: %m", lnk); + return -errno; + } } if (!isbind && @@ -353,12 +371,17 @@ static int add_mount(const char *what, const char *where, const char *type, cons "SourcePath=%s\n" "DefaultDependencies=no\n" "Conflicts=" SPECIAL_UMOUNT_TARGET "\n" - "Before=" SPECIAL_UMOUNT_TARGET " %s\n" - "\n" + "Before=" SPECIAL_UMOUNT_TARGET "\n", + source); + + if (post) + fprintf(f, + "Before= %s\n", + post); + + fprintf(f, "[Automount]\n" "Where=%s\n", - source, - post, where); fflush(f); @@ -383,19 +406,21 @@ static int add_mount(const char *what, const char *where, const char *type, cons } static int parse_fstab(const char *prefix, bool initrd) { - FILE *f; _cleanup_free_ char *fstab_path = NULL; + FILE *f; int r = 0; struct mntent *me; - errno = 0; - fstab_path = strjoin(prefix, "/etc/fstab", NULL); + fstab_path = strjoin(strempty(prefix), "/etc/fstab", NULL); + if (!fstab_path) + return log_oom(); + f = setmntent(fstab_path, "r"); if (!f) { if (errno == ENOENT) return 0; - log_error("Failed to open %s/etc/fstab: %m", prefix); + log_error("Failed to open %s/etc/fstab: %m", strempty(prefix)); return -errno; } @@ -407,7 +432,7 @@ static int parse_fstab(const char *prefix, bool initrd) { continue; what = fstab_node_to_udev_node(me->mnt_fsname); - where = strjoin(prefix, me->mnt_dir, NULL); + where = strjoin(strempty(prefix), me->mnt_dir, NULL); if (!what || !where) { r = log_oom(); goto finish; @@ -421,7 +446,8 @@ static int parse_fstab(const char *prefix, bool initrd) { if (streq(me->mnt_type, "swap")) k = add_swap(what, me); else { - bool noauto, nofail, automount, isbind, isnetwork; + bool noauto, nofail, automount, isbind; + const char *pre, *pre2, *post, *online; noauto = !!hasmntopt(me, "noauto"); nofail = !!hasmntopt(me, "nofail"); @@ -429,11 +455,27 @@ static int parse_fstab(const char *prefix, bool initrd) { hasmntopt(me, "comment=systemd.automount") || hasmntopt(me, "x-systemd.automount"); isbind = mount_is_bind(me); - isnetwork = mount_is_network(me); + + if (initrd) { + pre = pre2 = online = NULL; + post = SPECIAL_INITRD_FS_TARGET; + } else if (mount_in_initrd(me)) { + pre = pre2 = online = NULL; + post = SPECIAL_INITRD_ROOT_FS_TARGET; + } else if (mount_is_network(me)) { + pre = SPECIAL_REMOTE_FS_PRE_TARGET; + pre2 = SPECIAL_NETWORK_TARGET; + online = SPECIAL_NETWORK_ONLINE_TARGET; + post = SPECIAL_REMOTE_FS_TARGET; + } else { + pre = SPECIAL_LOCAL_FS_PRE_TARGET; + pre2 = online = NULL; + post = SPECIAL_LOCAL_FS_TARGET; + } k = add_mount(what, where, me->mnt_type, me->mnt_opts, - me->mnt_passno, noauto, nofail, automount, - isbind, isnetwork, fstab_path); + me->mnt_passno, noauto, nofail, automount, + isbind, pre, pre2, online, post, fstab_path); } if (k < 0) @@ -446,8 +488,8 @@ finish: } static int parse_new_root_from_proc_cmdline(void) { - char *w, *state; _cleanup_free_ char *what = NULL, *type = NULL, *opts = NULL, *line = NULL; + char *w, *state; int r; size_t l; @@ -465,7 +507,7 @@ static int parse_new_root_from_proc_cmdline(void) { /* root= and roofstype= may occur more than once, the last instance should take precedence. * In the case of multiple rootflags= the arguments should be concatenated */ FOREACH_WORD_QUOTED(w, l, line, state) { - char *word, *tmp_word; + _cleanup_free_ char *word; word = strndup(w, l); if (!word) @@ -484,36 +526,42 @@ static int parse_new_root_from_proc_cmdline(void) { return log_oom(); } else if (startswith(word, "rootflags=")) { - tmp_word = opts; - opts = strjoin(opts, ",", word + 10, NULL); - free(tmp_word); - if (!opts) + char *o; + + o = strjoin(opts, ",", word + 10, NULL); + if (!o) return log_oom(); + free(opts); + opts = o; + } else if (streq(word, "ro") || streq(word, "rw")) { - tmp_word = opts; - opts = strjoin(opts, ",", word, NULL); - free(tmp_word); - if (!opts) + char *o; + + o = strjoin(opts, ",", word, NULL); + if (!o) return log_oom(); + free(opts); + opts = o; } - - free(word); } - if (what) { + if (!what) { + log_debug("Could not find a root= entry on the kernel commandline."); + return 0; + } - log_debug("Found entry what=%s where=/sysroot type=%s", what, type); - r = add_mount(what, "/sysroot", type, opts, 0, false, false, false, - false, false, "/proc/cmdline"); + if (what[0] != '/') { + log_debug("Skipping entry what=%s where=/sysroot type=%s", what, type); + return 0; + } - if (r < 0) - return r; - } else - log_error("Could not find a root= entry on the kernel commandline."); + log_debug("Found entry what=%s where=/sysroot type=%s", what, type); + r = add_mount(what, "/sysroot", type, opts, 0, false, false, false, + false, NULL, NULL, NULL, SPECIAL_INITRD_ROOT_FS_TARGET, "/proc/cmdline"); - return 0; + return (r < 0) ? r : 0; } static int parse_proc_cmdline(void) { @@ -591,7 +639,7 @@ int main(int argc, char *argv[]) { if (!arg_enabled) return (r < 0) ? EXIT_FAILURE : EXIT_SUCCESS; - k = parse_fstab("", false); + k = parse_fstab(NULL, false); if (in_initrd()) l = parse_fstab("/sysroot", true);