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Diffstat (limited to 'src')
-rw-r--r--src/core/mount.c24
-rw-r--r--src/core/swap.c71
-rw-r--r--src/fstab-generator/fstab-generator.c42
-rw-r--r--src/shared/fstab-util.c145
-rw-r--r--src/shared/fstab-util.h34
-rw-r--r--src/shared/generator.c41
-rw-r--r--src/shared/util.c17
-rw-r--r--src/shared/util.h2
-rw-r--r--src/test/test-fstab-util.c112
9 files changed, 317 insertions, 171 deletions
diff --git a/src/core/mount.c b/src/core/mount.c
index 13c634807b..a551235f13 100644
--- a/src/core/mount.c
+++ b/src/core/mount.c
@@ -44,6 +44,7 @@
#include "bus-common-errors.h"
#include "exit-status.h"
#include "def.h"
+#include "fstab-util.h"
#define RETRY_UMOUNT_MAX 32
@@ -70,7 +71,7 @@ static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *user
static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata);
static bool mount_needs_network(const char *options, const char *fstype) {
- if (mount_test_option(options, "_netdev"))
+ if (fstab_test_option(options, "_netdev\0"))
return true;
if (fstype && fstype_is_network(fstype))
@@ -88,16 +89,10 @@ static bool mount_is_network(const MountParameters *p) {
static bool mount_is_bind(const MountParameters *p) {
assert(p);
- if (mount_test_option(p->options, "bind"))
+ if (fstab_test_option(p->options, "bind\0" "rbind\0"))
return true;
- if (p->fstype && streq(p->fstype, "bind"))
- return true;
-
- if (mount_test_option(p->options, "rbind"))
- return true;
-
- if (p->fstype && streq(p->fstype, "rbind"))
+ if (p->fstype && STR_IN_SET(p->fstype, "bind", "rbind"))
return true;
return false;
@@ -106,7 +101,7 @@ static bool mount_is_bind(const MountParameters *p) {
static bool mount_is_auto(const MountParameters *p) {
assert(p);
- return !mount_test_option(p->options, "noauto");
+ return !fstab_test_option(p->options, "noauto\0");
}
static bool needs_quota(const MountParameters *p) {
@@ -118,11 +113,8 @@ static bool needs_quota(const MountParameters *p) {
if (mount_is_bind(p))
return false;
- return mount_test_option(p->options, "usrquota") ||
- mount_test_option(p->options, "grpquota") ||
- mount_test_option(p->options, "quota") ||
- mount_test_option(p->options, "usrjquota") ||
- mount_test_option(p->options, "grpjquota");
+ return fstab_test_option(p->options,
+ "usrquota\0" "grpquota\0" "quota\0" "usrjquota\0" "grpjquota\0");
}
static void mount_init(Unit *u) {
@@ -369,7 +361,7 @@ static bool should_umount(Mount *m) {
return false;
p = get_mount_parameters(m);
- if (p && mount_test_option(p->options, "x-initrd.mount") &&
+ if (p && fstab_test_option(p->options, "x-initrd.mount\0") &&
!in_initrd())
return false;
diff --git a/src/core/swap.c b/src/core/swap.c
index cb19d0f123..b2ebed4b72 100644
--- a/src/core/swap.c
+++ b/src/core/swap.c
@@ -41,6 +41,7 @@
#include "path-util.h"
#include "virt.h"
#include "udev-util.h"
+#include "fstab-util.h"
static const UnitActiveState state_translation_table[_SWAP_STATE_MAX] = {
[SWAP_DEAD] = UNIT_INACTIVE,
@@ -704,71 +705,6 @@ fail:
swap_enter_dead(s, SWAP_FAILURE_RESOURCES);
}
-static int mount_find_pri(const char *options, int *ret) {
- const char *opt;
- char *end;
- unsigned long r;
-
- assert(ret);
-
- if (!options)
- return 0;
-
- opt = mount_test_option(options, "pri");
- if (!opt)
- return 0;
-
- opt += strlen("pri");
- if (*opt != '=')
- return -EINVAL;
-
- errno = 0;
- r = strtoul(opt + 1, &end, 10);
- if (errno > 0)
- return -errno;
-
- if (end == opt + 1 || (*end != ',' && *end != 0))
- return -EINVAL;
-
- *ret = (int) r;
- return 1;
-}
-
-static int mount_find_discard(const char *options, char **ret) {
- const char *opt;
- char *ans;
- size_t len;
-
- assert(ret);
-
- if (!options)
- return 0;
-
- opt = mount_test_option(options, "discard");
- if (!opt)
- return 0;
-
- opt += strlen("discard");
- if (*opt == ',' || *opt == '\0')
- ans = strdup("all");
- else {
- if (*opt != '=')
- return -EINVAL;
-
- len = strcspn(opt + 1, ",");
- if (len == 0)
- return -EINVAL;
-
- ans = strndup(opt + 1, len);
- }
-
- if (!ans)
- return -ENOMEM;
-
- *ret = ans;
- return 1;
-}
-
static void swap_enter_activating(Swap *s) {
_cleanup_free_ char *discard = NULL;
int r, priority = -1;
@@ -779,11 +715,12 @@ static void swap_enter_activating(Swap *s) {
s->control_command = s->exec_command + SWAP_EXEC_ACTIVATE;
if (s->from_fragment) {
- mount_find_discard(s->parameters_fragment.options, &discard);
+ fstab_filter_options(s->parameters_fragment.options, "discard\0",
+ NULL, &discard, NULL);
priority = s->parameters_fragment.priority;
if (priority < 0)
- mount_find_pri(s->parameters_fragment.options, &priority);
+ fstab_find_pri(s->parameters_fragment.options, &priority);
}
r = exec_command_set(s->control_command, "/sbin/swapon", NULL);
diff --git a/src/fstab-generator/fstab-generator.c b/src/fstab-generator/fstab-generator.c
index 496657bdc1..64eed49523 100644
--- a/src/fstab-generator/fstab-generator.c
+++ b/src/fstab-generator/fstab-generator.c
@@ -29,6 +29,7 @@
#include "util.h"
#include "unit-name.h"
#include "path-util.h"
+#include "fstab-util.h"
#include "mount-setup.h"
#include "special.h"
#include "mkdir.h"
@@ -47,33 +48,6 @@ static char *arg_usr_what = NULL;
static char *arg_usr_fstype = NULL;
static char *arg_usr_options = NULL;
-static int mount_find_pri(struct mntent *me, int *ret) {
- char *end, *opt;
- unsigned long r;
-
- assert(me);
- assert(ret);
-
- opt = hasmntopt(me, "pri");
- if (!opt)
- return 0;
-
- opt += strlen("pri");
- if (*opt != '=')
- return -EINVAL;
-
- errno = 0;
- r = strtoul(opt + 1, &end, 10);
- if (errno > 0)
- return -errno;
-
- if (end == opt + 1 || (*end != ',' && *end != 0))
- return -EINVAL;
-
- *ret = (int) r;
- return 1;
-}
-
static int add_swap(
const char *what,
struct mntent *me,
@@ -97,11 +71,9 @@ static int add_swap(
return 0;
}
- r = mount_find_pri(me, &pri);
- if (r < 0) {
- log_error("Failed to parse priority");
- return r;
- }
+ r = fstab_find_pri(me->mnt_opts, &pri);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse priority: %m");
name = unit_name_from_path(what, ".swap");
if (!name)
@@ -434,8 +406,7 @@ static int add_root_mount(void) {
if (!arg_root_options)
opts = arg_root_rw > 0 ? "rw" : "ro";
else if (arg_root_rw >= 0 ||
- (!mount_test_option(arg_root_options, "ro") &&
- !mount_test_option(arg_root_options, "rw")))
+ !fstab_test_option(arg_root_options, "ro\0" "rw\0"))
opts = strappenda(arg_root_options, ",", arg_root_rw > 0 ? "rw" : "ro");
else
opts = arg_root_options;
@@ -492,8 +463,7 @@ static int add_usr_mount(void) {
if (!arg_usr_options)
opts = arg_root_rw > 0 ? "rw" : "ro";
- else if (!mount_test_option(arg_usr_options, "ro") &&
- !mount_test_option(arg_usr_options, "rw"))
+ else if (!fstab_test_option(arg_usr_options, "ro\0" "rw\0"))
opts = strappenda(arg_usr_options, ",", arg_root_rw > 0 ? "rw" : "ro");
else
opts = arg_usr_options;
diff --git a/src/shared/fstab-util.c b/src/shared/fstab-util.c
new file mode 100644
index 0000000000..546c81b80f
--- /dev/null
+++ b/src/shared/fstab-util.c
@@ -0,0 +1,145 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ 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 "fstab-util.h"
+#include "strv.h"
+#include "util.h"
+
+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_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;
+
+ r = safe_atou(opt, &pri);
+ if (r < 0)
+ return r;
+
+ *ret = (int) r;
+ return 1;
+}
diff --git a/src/shared/fstab-util.h b/src/shared/fstab-util.h
new file mode 100644
index 0000000000..39ddb71ef4
--- /dev/null
+++ b/src/shared/fstab-util.h
@@ -0,0 +1,34 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+ 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 <stdbool.h>
+#include <stddef.h>
+
+int fstab_filter_options(const char *opts, const char *names,
+ const char **namefound, char **value, char **filtered);
+
+static inline bool fstab_test_option(const char *opts, const char *names) {
+ return !!fstab_filter_options(opts, names, NULL, NULL, NULL);
+}
+
+int fstab_find_pri(const char *options, int *ret);
diff --git a/src/shared/generator.c b/src/shared/generator.c
index 465e5f6cc8..4140afba82 100644
--- a/src/shared/generator.c
+++ b/src/shared/generator.c
@@ -28,6 +28,7 @@
#include "unit-name.h"
#include "generator.h"
#include "path-util.h"
+#include "fstab-util.h"
#include "dropin.h"
int generator_write_fsck_deps(
@@ -92,42 +93,16 @@ int generator_write_timeouts(const char *dir, const char *what, const char *wher
* endless device timeouts for devices that show up only after
* user input, like crypto devices. */
- _cleanup_free_ char *node = NULL, *unit = NULL, *t = NULL;
- char *start, *timeout;
+ _cleanup_free_ char *node = NULL, *unit = NULL, *timeout = NULL;
usec_t u;
int r;
- size_t len;
-
- if ((start = mount_test_option(opts, "comment=systemd.device-timeout")))
- timeout = start + 31;
- else if ((start = mount_test_option(opts, "x-systemd.device-timeout")))
- timeout = start + 25;
- else {
- if (filtered) {
- *filtered = strdup(opts ?: "");
- if (!*filtered)
- return log_oom();
- }
- return 0;
- }
-
- len = strcspn(timeout, ",;" WHITESPACE);
- t = strndup(timeout, len);
- if (!t)
- return -ENOMEM;
-
- if (filtered) {
- char *prefix, *postfix;
+ r = fstab_filter_options(opts, "comment=systemd.device-timeout\0" "x-systemd.device-timeout\0",
+ NULL, &timeout, filtered);
+ if (r <= 0)
+ return r;
- prefix = strndupa(opts, start - opts - (start != opts));
- postfix = timeout + len + (start == opts && timeout[len] != '\0');
- *filtered = strjoin(prefix, *postfix ? postfix : NULL, NULL);
- if (!*filtered)
- return log_oom();
- }
-
- r = parse_sec(t, &u);
+ r = parse_sec(timeout, &u);
if (r < 0) {
log_warning("Failed to parse timeout for %s, ignoring: %s",
where, timeout);
@@ -140,7 +115,7 @@ int generator_write_timeouts(const char *dir, const char *what, const char *wher
unit = unit_name_from_path(node, ".device");
if (!unit)
- return -ENOMEM;
+ return log_oom();
return write_drop_in_format(dir, unit, 50, "device-timeout",
"# Automatically generated by %s\n\n"
diff --git a/src/shared/util.c b/src/shared/util.c
index 6520e511f0..280e42b305 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -6744,23 +6744,6 @@ uint64_t physical_memory(void) {
return (uint64_t) mem * (uint64_t) page_size();
}
-char* mount_test_option(const char *haystack, const char *needle) {
-
- struct mntent me = {
- .mnt_opts = (char*) haystack
- };
-
- assert(needle);
-
- /* Like glibc's hasmntopt(), but works on a string, not a
- * struct mntent */
-
- if (!haystack)
- return NULL;
-
- return hasmntopt(&me, needle);
-}
-
void hexdump(FILE *f, const void *p, size_t s) {
const uint8_t *b = p;
unsigned n = 0;
diff --git a/src/shared/util.h b/src/shared/util.h
index 141a3feab6..b337249faa 100644
--- a/src/shared/util.h
+++ b/src/shared/util.h
@@ -1010,8 +1010,6 @@ const char *personality_to_string(unsigned long);
uint64_t physical_memory(void);
-char* mount_test_option(const char *haystack, const char *needle);
-
void hexdump(FILE *f, const void *p, size_t s);
union file_handle_union {
diff --git a/src/test/test-fstab-util.c b/src/test/test-fstab-util.c
new file mode 100644
index 0000000000..ddf965dde5
--- /dev/null
+++ b/src/test/test-fstab-util.c
@@ -0,0 +1,112 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ 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 "fstab-util.h"
+#include "util.h"
+#include "log.h"
+
+/*
+int fstab_filter_options(const char *opts, const char *names,
+ const char **namefound, char **value, char **filtered);
+*/
+
+static void do_fstab_filter_options(const char *opts,
+ const char *remove,
+ int r_expected,
+ const char *name_expected,
+ const char *value_expected,
+ const char *filtered_expected) {
+
+ int r;
+ const char *name;
+ _cleanup_free_ char *value, *filtered;
+
+ r = fstab_filter_options(opts, remove, &name, &value, &filtered);
+ log_info("\"%s\" → %d, \"%s\", \"%s\", \"%s\", expected %d, \"%s\", \"%s\", \"%s\"",
+ opts, r, name, value, filtered,
+ r_expected, name_expected, value_expected, filtered_expected ?: opts);
+ assert_se(r == r_expected);
+ assert_se(streq_ptr(name, name_expected));
+ assert_se(streq_ptr(value, value_expected));
+ assert_se(streq_ptr(filtered, filtered_expected ?: opts));
+
+ /* also test the malloc-less mode */
+ r = fstab_filter_options(opts, remove, &name, NULL, NULL);
+ log_info("\"%s\" → %d, \"%s\", expected %d, \"%s\"",
+ opts, r, name,
+ r_expected, name_expected);
+ assert_se(r == r_expected);
+ assert_se(streq_ptr(name, name_expected));
+}
+
+static void test_fstab_filter_options(void) {
+ do_fstab_filter_options("opt=0", "opt\0x-opt\0", 1, "opt", "0", "");
+ do_fstab_filter_options("opt=0", "x-opt\0opt\0", 1, "opt", "0", "");
+ do_fstab_filter_options("opt", "opt\0x-opt\0", 1, "opt", NULL, "");
+ do_fstab_filter_options("opt", "x-opt\0opt\0", 1, "opt", NULL, "");
+ do_fstab_filter_options("x-opt", "x-opt\0opt\0", 1, "x-opt", NULL, "");
+
+ do_fstab_filter_options("opt=0,other", "opt\0x-opt\0", 1, "opt", "0", "other");
+ do_fstab_filter_options("opt=0,other", "x-opt\0opt\0", 1, "opt", "0", "other");
+ do_fstab_filter_options("opt,other", "opt\0x-opt\0", 1, "opt", NULL, "other");
+ do_fstab_filter_options("opt,other", "x-opt\0opt\0", 1, "opt", NULL, "other");
+ do_fstab_filter_options("x-opt,other", "opt\0x-opt\0", 1, "x-opt", NULL, "other");
+
+ do_fstab_filter_options("opto=0,other", "opt\0x-opt\0", 0, NULL, NULL, NULL);
+ do_fstab_filter_options("opto,other", "opt\0x-opt\0", 0, NULL, NULL, NULL);
+ do_fstab_filter_options("x-opto,other", "opt\0x-opt\0", 0, NULL, NULL, NULL);
+
+ do_fstab_filter_options("first,opt=0", "opt\0x-opt\0", 1, "opt", "0", "first");
+ do_fstab_filter_options("first=1,opt=0", "opt\0x-opt\0", 1, "opt", "0", "first=1");
+ do_fstab_filter_options("first,opt=", "opt\0x-opt\0", 1, "opt", "", "first");
+ do_fstab_filter_options("first=1,opt", "opt\0x-opt\0", 1, "opt", NULL, "first=1");
+ do_fstab_filter_options("first=1,x-opt", "opt\0x-opt\0", 1, "x-opt", NULL, "first=1");
+
+ do_fstab_filter_options("first,opt=0,last=1", "opt\0x-opt\0", 1, "opt", "0", "first,last=1");
+ do_fstab_filter_options("first=1,opt=0,last=2", "x-opt\0opt\0", 1, "opt", "0", "first=1,last=2");
+ do_fstab_filter_options("first,opt,last", "opt\0", 1, "opt", NULL, "first,last");
+ do_fstab_filter_options("first=1,opt,last", "x-opt\0opt\0", 1, "opt", NULL, "first=1,last");
+ do_fstab_filter_options("first=,opt,last", "opt\0noopt\0", 1, "opt", NULL, "first=,last");
+
+ /* check repeated options */
+ do_fstab_filter_options("first,opt=0,noopt=1,last=1", "opt\0noopt\0", 1, "noopt", "1", "first,last=1");
+ do_fstab_filter_options("first=1,opt=0,last=2,opt=1", "opt\0", 1, "opt", "1", "first=1,last=2");
+ do_fstab_filter_options("x-opt=0,x-opt=1", "opt\0x-opt\0", 1, "x-opt", "1", "");
+ do_fstab_filter_options("opt=0,x-opt=1", "opt\0x-opt\0", 1, "x-opt", "1", "");
+
+ /* check that semicolons are not misinterpreted */
+ do_fstab_filter_options("opt=0;", "opt\0", 1, "opt", "0;", "");
+ do_fstab_filter_options("opt;=0", "x-opt\0opt\0noopt\0x-noopt\0", 0, NULL, NULL, NULL);
+ do_fstab_filter_options("opt;", "opt\0x-opt\0", 0, NULL, NULL, NULL);
+
+ /* check that spaces are not misinterpreted */
+ do_fstab_filter_options("opt=0 ", "opt\0", 1, "opt", "0 ", "");
+ do_fstab_filter_options("opt =0", "x-opt\0opt\0noopt\0x-noopt\0", 0, NULL, NULL, NULL);
+ do_fstab_filter_options(" opt ", "opt\0x-opt\0", 0, NULL, NULL, NULL);
+
+ /* check function will NULL args */
+ do_fstab_filter_options(NULL, "opt\0", 0, NULL, NULL, "");
+ do_fstab_filter_options("", "opt\0", 0, NULL, NULL, "");
+}
+
+int main(void) {
+ test_fstab_filter_options();
+}
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