X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Ffstab-generator%2Ffstab-generator.c;h=a7536f8f7e5cfc71fe1a39dbaf8a8f64bc79c909;hb=7f5806d7095a197e4788a7803642831beec295bf;hp=b4fb1344e6b200e5e6cd5dbd956ac00b72583944;hpb=700e07ffd53083114e91bb4ba646ed26d0463f67;p=elogind.git diff --git a/src/fstab-generator/fstab-generator.c b/src/fstab-generator/fstab-generator.c index b4fb1344e..a7536f8f7 100644 --- a/src/fstab-generator/fstab-generator.c +++ b/src/fstab-generator/fstab-generator.c @@ -38,22 +38,6 @@ static const char *arg_dest = "/tmp"; static bool arg_enabled = true; -static int device_name(const char *path, char **unit) { - char *p; - - assert(path); - - if (!is_device_path(path)) - return 0; - - p = unit_name_from_path(path, ".device"); - if (!p) - return log_oom(); - - *unit = p; - return 1; -} - static int mount_find_pri(struct mntent *me, int *ret) { char *end, *pri; unsigned long r; @@ -69,7 +53,7 @@ static int mount_find_pri(struct mntent *me, int *ret) { errno = 0; r = strtoul(pri, &end, 10); - if (errno != 0) + if (errno > 0) return -errno; if (end == pri || (*end != ',' && *end != 0)) @@ -80,9 +64,9 @@ static int mount_find_pri(struct mntent *me, int *ret) { } static int add_swap(const char *what, struct mntent *me) { - char _cleanup_free_ *name = NULL, *unit = NULL, *lnk = NULL, *device = NULL; - FILE _cleanup_fclose_ *f = NULL; - bool noauto, nofail; + _cleanup_free_ char *name = NULL, *unit = NULL, *lnk = NULL; + _cleanup_fclose_ FILE *f = NULL; + bool noauto; int r, pri = -1; assert(what); @@ -95,7 +79,6 @@ static int add_swap(const char *what, struct mntent *me) { } noauto = !!hasmntopt(me, "noauto"); - nofail = !!hasmntopt(me, "nofail"); name = unit_name_from_path(what, ".swap"); if (!name) @@ -114,18 +97,10 @@ static int add_swap(const char *what, struct mntent *me) { return -errno; } - fputs("# Automatically generated by systemd-fstab-generator\n\n" - "[Unit]\n" - "SourcePath=/etc/fstab\n" - "DefaultDependencies=no\n" - "Conflicts=" SPECIAL_UMOUNT_TARGET "\n" - "Before=" SPECIAL_UMOUNT_TARGET "\n", f); - - if (!noauto && !nofail) - fputs("Before=" SPECIAL_SWAP_TARGET "\n", f); - fprintf(f, - "\n" + "# Automatically generated by systemd-fstab-generator\n\n" + "[Unit]\n" + "SourcePath=/etc/fstab\n\n" "[Swap]\n" "What=%s\n", what); @@ -151,38 +126,11 @@ static int add_swap(const char *what, struct mntent *me) { log_error("Failed to create symlink %s: %m", lnk); return -errno; } - - r = device_name(what, &device); - if (r < 0) - return r; - - if (r > 0) { - free(lnk); - lnk = strjoin(arg_dest, "/", device, ".wants/", 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; - } - } } return 0; } -static bool mount_is_bind(struct mntent *me) { - assert(me); - - return - hasmntopt(me, "bind") || - streq(me->mnt_type, "bind") || - hasmntopt(me, "rbind") || - streq(me->mnt_type, "rbind"); -} - static bool mount_is_network(struct mntent *me) { assert(me); @@ -199,14 +147,21 @@ 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, - const char *pre, const char *post, const char *source) { - char _cleanup_free_ - *name = NULL, *unit = NULL, *lnk = NULL, *device = NULL, +static int add_mount( + const char *what, + const char *where, + const char *type, + const char *opts, + int passno, + bool noauto, + bool nofail, + bool automount, + const char *post, + const char *source) { + _cleanup_free_ char + *name = NULL, *unit = NULL, *lnk = NULL, *automount_name = NULL, *automount_unit = NULL; - FILE _cleanup_fclose_ *f = NULL; - int r; + _cleanup_fclose_ FILE *f = NULL; assert(what); assert(where); @@ -246,22 +201,9 @@ static int add_mount(const char *what, const char *where, const char *type, cons fprintf(f, "# Automatically generated by systemd-fstab-generator\n\n" "[Unit]\n" - "SourcePath=%s\n" - "DefaultDependencies=no\n", + "SourcePath=%s\n", source); - if (!path_equal(where, "/")) { - if (pre) - fprintf(f, - "After=%s\n" - "Wants=%s\n", - pre, - pre); - fprintf(f, - "Conflicts=" SPECIAL_UMOUNT_TARGET "\n" - "Before=" SPECIAL_UMOUNT_TARGET "\n"); - } - if (post && !noauto && !nofail && !automount) fprintf(f, "Before=%s\n", @@ -303,32 +245,11 @@ static int add_mount(const char *what, const char *where, const char *type, cons return -errno; } } - - if (!isbind && - !path_equal(where, "/")) { - - r = device_name(what, &device); - if (r < 0) - return r; - - if (r > 0) { - free(lnk); - lnk = strjoin(arg_dest, "/", device, ".wants/", 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; - } - } - } } if (automount && !path_equal(where, "/")) { automount_name = unit_name_from_path(where, ".automount"); - if (!name) + if (!automount_name) return log_oom(); automount_unit = strjoin(arg_dest, "/", automount_name, NULL); @@ -345,10 +266,7 @@ static int add_mount(const char *what, const char *where, const char *type, cons fprintf(f, "# Automatically generated by systemd-fstab-generator\n\n" "[Unit]\n" - "SourcePath=%s\n" - "DefaultDependencies=no\n" - "Conflicts=" SPECIAL_UMOUNT_TARGET "\n" - "Before=" SPECIAL_UMOUNT_TARGET "\n", + "SourcePath=%s\n", source); if (post) @@ -383,35 +301,32 @@ 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; + char *fstab_path; + _cleanup_endmntent_ FILE *f; int r = 0; struct mntent *me; - errno = 0; - fstab_path = strjoin(prefix, "/etc/fstab", NULL); + fstab_path = strappenda(strempty(prefix), "/etc/fstab"); 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; } while ((me = getmntent(f))) { - char _cleanup_free_ *where = NULL, *what = NULL; + _cleanup_free_ char *where = NULL, *what = NULL; int k; if (initrd && !mount_in_initrd(me)) continue; what = fstab_node_to_udev_node(me->mnt_fsname); - where = strjoin(prefix, me->mnt_dir, NULL); - if (!what || !where) { - r = log_oom(); - goto finish; - } + where = strjoin(strempty(prefix), me->mnt_dir, NULL); + if (!what || !where) + return log_oom(); if (is_path(where)) path_kill_slashes(where); @@ -421,46 +336,43 @@ 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; - const char *pre, *post; + bool noauto, nofail, automount; + const char *post; noauto = !!hasmntopt(me, "noauto"); nofail = !!hasmntopt(me, "nofail"); automount = hasmntopt(me, "comment=systemd.automount") || hasmntopt(me, "x-systemd.automount"); - isbind = mount_is_bind(me); if (initrd) { post = SPECIAL_INITRD_FS_TARGET; - pre = NULL; + } else if (mount_in_initrd(me)) { + post = SPECIAL_INITRD_ROOT_FS_TARGET; } else if (mount_is_network(me)) { post = SPECIAL_REMOTE_FS_TARGET; - pre = SPECIAL_REMOTE_FS_PRE_TARGET; } else { post = SPECIAL_LOCAL_FS_TARGET; - pre = SPECIAL_LOCAL_FS_PRE_TARGET; } k = add_mount(what, where, me->mnt_type, me->mnt_opts, - me->mnt_passno, noauto, nofail, automount, - isbind, pre, post, fstab_path); + me->mnt_passno, noauto, nofail, automount, + post, fstab_path); } if (k < 0) r = k; } -finish: - endmntent(f); return r; } 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; + bool noauto, nofail; r = read_one_line_file("/proc/cmdline", &line); if (r < 0) { @@ -476,7 +388,7 @@ 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) @@ -495,26 +407,32 @@ 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); } + noauto = !!strstr(opts, "noauto"); + nofail = !!strstr(opts, "nofail"); + if (!what) { - log_error("Could not find a root= entry on the kernel commandline."); + log_debug("Could not find a root= entry on the kernel commandline."); return 0; } @@ -524,14 +442,14 @@ static int parse_new_root_from_proc_cmdline(void) { } 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, SPECIAL_ROOT_FS_TARGET, "/proc/cmdline"); + r = add_mount(what, "/sysroot", type, opts, 1, noauto, nofail, false, + SPECIAL_INITRD_ROOT_FS_TARGET, "/proc/cmdline"); return (r < 0) ? r : 0; } static int parse_proc_cmdline(void) { - char _cleanup_free_ *line = NULL; + _cleanup_free_ char *line = NULL; char *w, *state; int r; size_t l; @@ -546,7 +464,7 @@ static int parse_proc_cmdline(void) { } FOREACH_WORD_QUOTED(w, l, line, state) { - char _cleanup_free_ *word = NULL; + _cleanup_free_ char *word = NULL; word = strndup(w, l); if (!word) @@ -562,9 +480,9 @@ static int parse_proc_cmdline(void) { } else if (startswith(word, "rd.fstab=")) { if (in_initrd()) { - r = parse_boolean(word + 6); + r = parse_boolean(word + 9); if (r < 0) - log_warning("Failed to parse fstab switch %s. Ignoring.", word + 6); + log_warning("Failed to parse fstab switch %s. Ignoring.", word + 9); else arg_enabled = r; } @@ -605,7 +523,7 @@ 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);