diff options
Diffstat (limited to 'src/shared/fstab-util.c')
| -rw-r--r-- | src/shared/fstab-util.c | 263 |
1 files changed, 0 insertions, 263 deletions
diff --git a/src/shared/fstab-util.c b/src/shared/fstab-util.c deleted file mode 100644 index a4e0cd3267..0000000000 --- a/src/shared/fstab-util.c +++ /dev/null @@ -1,263 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2015 Zbigniew Jędrzejewski-Szmek - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <errno.h> -#include <mntent.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "alloc-util.h" -#include "device-nodes.h" -#include "fstab-util.h" -#include "macro.h" -#include "mount-util.h" -#include "parse-util.h" -#include "path-util.h" -#include "string-util.h" -#include "strv.h" -#include "util.h" - -bool fstab_is_mount_point(const char *mount) { - _cleanup_endmntent_ FILE *f = NULL; - struct mntent *m; - - f = setmntent("/etc/fstab", "r"); - if (!f) - return false; - - while ((m = getmntent(f))) - if (path_equal(m->mnt_dir, mount)) - return true; - - return false; -} - -int fstab_filter_options(const char *opts, const char *names, - const char **namefound, char **value, char **filtered) { - const char *name, *n = NULL, *x; - _cleanup_strv_free_ char **stor = NULL; - _cleanup_free_ char *v = NULL, **strv = NULL; - - assert(names && *names); - - if (!opts) - goto answer; - - /* If !value and !filtered, this function is not allowed to fail. */ - - if (!filtered) { - const char *word, *state; - size_t l; - - FOREACH_WORD_SEPARATOR(word, l, opts, ",", state) - NULSTR_FOREACH(name, names) { - if (l < strlen(name)) - continue; - if (!strneq(word, name, strlen(name))) - continue; - - /* we know that the string is NUL - * terminated, so *x is valid */ - x = word + strlen(name); - if (IN_SET(*x, '\0', '=', ',')) { - n = name; - if (value) { - free(v); - if (IN_SET(*x, '\0', ',')) - v = NULL; - else { - assert(*x == '='); - x++; - v = strndup(x, l - strlen(name) - 1); - if (!v) - return -ENOMEM; - } - } - } - } - } else { - char **t, **s; - - stor = strv_split(opts, ","); - if (!stor) - return -ENOMEM; - strv = memdup(stor, sizeof(char*) * (strv_length(stor) + 1)); - if (!strv) - return -ENOMEM; - - for (s = t = strv; *s; s++) { - NULSTR_FOREACH(name, names) { - x = startswith(*s, name); - if (x && IN_SET(*x, '\0', '=')) - goto found; - } - - *t = *s; - t++; - continue; - found: - /* Keep the last occurence found */ - n = name; - if (value) { - free(v); - if (*x == '\0') - v = NULL; - else { - assert(*x == '='); - x++; - v = strdup(x); - if (!v) - return -ENOMEM; - } - } - } - *t = NULL; - } - -answer: - if (namefound) - *namefound = n; - if (filtered) { - char *f; - - f = strv_join(strv, ","); - if (!f) - return -ENOMEM; - - *filtered = f; - } - if (value) { - *value = v; - v = NULL; - } - - return !!n; -} - -int fstab_extract_values(const char *opts, const char *name, char ***values) { - _cleanup_strv_free_ char **optsv = NULL, **res = NULL; - char **s; - - assert(opts); - assert(name); - assert(values); - - optsv = strv_split(opts, ","); - if (!optsv) - return -ENOMEM; - - STRV_FOREACH(s, optsv) { - char *arg; - int r; - - arg = startswith(*s, name); - if (!arg || *arg != '=') - continue; - r = strv_extend(&res, arg + 1); - if (r < 0) - return r; - } - - *values = res; - res = NULL; - - return !!*values; -} - -int fstab_find_pri(const char *options, int *ret) { - _cleanup_free_ char *opt = NULL; - int r; - unsigned pri; - - assert(ret); - - r = fstab_filter_options(options, "pri\0", NULL, &opt, NULL); - if (r < 0) - return r; - if (r == 0 || !opt) - return 0; - - r = safe_atou(opt, &pri); - if (r < 0) - return r; - - if ((int) pri < 0) - return -ERANGE; - - *ret = (int) pri; - return 1; -} - -static char *unquote(const char *s, const char* quotes) { - size_t l; - assert(s); - - /* This is rather stupid, simply removes the heading and - * trailing quotes if there is one. Doesn't care about - * escaping or anything. - * - * DON'T USE THIS FOR NEW CODE ANYMORE!*/ - - l = strlen(s); - if (l < 2) - return strdup(s); - - if (strchr(quotes, s[0]) && s[l-1] == s[0]) - return strndup(s+1, l-2); - - return strdup(s); -} - -static char *tag_to_udev_node(const char *tagvalue, const char *by) { - _cleanup_free_ char *t = NULL, *u = NULL; - size_t enc_len; - - u = unquote(tagvalue, QUOTES); - if (!u) - return NULL; - - enc_len = strlen(u) * 4 + 1; - t = new(char, enc_len); - if (!t) - return NULL; - - if (encode_devnode_name(u, t, enc_len) < 0) - return NULL; - - return strjoin("/dev/disk/by-", by, "/", t, NULL); -} - -char *fstab_node_to_udev_node(const char *p) { - assert(p); - - if (startswith(p, "LABEL=")) - return tag_to_udev_node(p+6, "label"); - - if (startswith(p, "UUID=")) - return tag_to_udev_node(p+5, "uuid"); - - if (startswith(p, "PARTUUID=")) - return tag_to_udev_node(p+9, "partuuid"); - - if (startswith(p, "PARTLABEL=")) - return tag_to_udev_node(p+10, "partlabel"); - - return strdup(p); -} |