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fileio: consolidate write_string_file*() 

Merge write_string_file(), write_string_file_no_create() and
write_string_file_atomic() into write_string_file() and provide a flags mask
that allows combinations of atomic writing, newline appending and automatic
file creation. Change all users accordingly.
This commit is contained in:
Daniel Mack 2015-07-06 19:19:25 -04:00
parent 40beecdb6d
commit 4c1fc3e404
29 changed files with 106 additions and 101 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/backlight/backlight.c
View File

@ -415,7 +415,7 @@ int main(int argc, char *argv[]) {
return EXIT_FAILURE;
}
r = write_string_file(saved, value);
r = write_string_file(saved, value, WRITE_STRING_FILE_CREATE);
if (r < 0) {
log_error_errno(r, "Failed to write %s: %m", saved);
return EXIT_FAILURE;

2
src/basic/capability.c
View File

@ -204,7 +204,7 @@ static int drop_from_file(const char *fn, uint64_t drop) {
if (asprintf(&p, "%u %u", lo, hi) < 0)
return -ENOMEM;
r = write_string_file(fn, p);
r = write_string_file(fn, p, WRITE_STRING_FILE_CREATE);
free(p);
return r;

12
src/basic/cgroup-util.c
View File

@ -646,7 +646,7 @@ int cg_attach(const char *controller, const char *path, pid_t pid) {
snprintf(c, sizeof(c), PID_FMT"\n", pid);
return write_string_file_no_create(fs, c);
return write_string_file(fs, c, 0);
}
int cg_attach_fallback(const char *controller, const char *path, pid_t pid) {
@ -820,7 +820,7 @@ int cg_install_release_agent(const char *controller, const char *agent) {
sc = strstrip(contents);
if (sc[0] == 0) {
r = write_string_file_no_create(fs, agent);
r = write_string_file(fs, agent, 0);
if (r < 0)
return r;
} else if (!streq(sc, agent))
@ -840,7 +840,7 @@ int cg_install_release_agent(const char *controller, const char *agent) {
sc = strstrip(contents);
if (streq(sc, "0")) {
r = write_string_file_no_create(fs, "1");
r = write_string_file(fs, "1", 0);
if (r < 0)
return r;
@ -861,7 +861,7 @@ int cg_uninstall_release_agent(const char *controller) {
if (r < 0)
return r;
r = write_string_file_no_create(fs, "0");
r = write_string_file(fs, "0", 0);
if (r < 0)
return r;
@ -872,7 +872,7 @@ int cg_uninstall_release_agent(const char *controller) {
if (r < 0)
return r;
r = write_string_file_no_create(fs, "");
r = write_string_file(fs, "", 0);
if (r < 0)
return r;
@ -1708,7 +1708,7 @@ int cg_set_attribute(const char *controller, const char *path, const char *attri
if (r < 0)
return r;
return write_string_file_no_create(p, value);
return write_string_file(p, value, 0);
}
int cg_get_attribute(const char *controller, const char *path, const char *attribute, char **ret) {

2
src/basic/fileio-label.c
View File

@ -31,7 +31,7 @@ int write_string_file_atomic_label(const char *fn, const char *line) {
if (r < 0)
return r;
r = write_string_file_atomic(fn, line);
r = write_string_file(fn, line, WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_ATOMIC);
mac_selinux_create_file_clear();

74
src/basic/fileio.c
View File

@ -45,42 +45,7 @@ int write_string_stream(FILE *f, const char *line, bool enforce_newline) {
return 0;
}
int write_string_file(const char *fn, const char *line) {
_cleanup_fclose_ FILE *f = NULL;
assert(fn);
assert(line);
f = fopen(fn, "we");
if (!f)
return -errno;
return write_string_stream(f, line, true);
}
int write_string_file_no_create(const char *fn, const char *line) {
_cleanup_fclose_ FILE *f = NULL;
int fd;
assert(fn);
assert(line);
/* We manually build our own version of fopen(..., "we") that
* works without O_CREAT */
fd = open(fn, O_WRONLY|O_CLOEXEC|O_NOCTTY);
if (fd < 0)
return -errno;
f = fdopen(fd, "we");
if (!f) {
safe_close(fd);
return -errno;
}
return write_string_stream(f, line, true);
}
int write_string_file_atomic(const char *fn, const char *line) {
static int write_string_file_atomic(const char *fn, const char *line, bool enforce_newline) {
_cleanup_fclose_ FILE *f = NULL;
_cleanup_free_ char *p = NULL;
int r;
@ -94,7 +59,7 @@ int write_string_file_atomic(const char *fn, const char *line) {
fchmod_umask(fileno(f), 0644);
r = write_string_stream(f, line, true);
r = write_string_stream(f, line, enforce_newline);
if (r >= 0) {
if (rename(p, fn) < 0)
r = -errno;
@ -106,6 +71,41 @@ int write_string_file_atomic(const char *fn, const char *line) {
return r;
}
int write_string_file(const char *fn, const char *line, WriteStringFileFlags flags) {
_cleanup_fclose_ FILE *f = NULL;
assert(fn);
assert(line);
if (flags & WRITE_STRING_FILE_ATOMIC) {
assert(flags & WRITE_STRING_FILE_CREATE);
return write_string_file_atomic(fn, line, !(flags & WRITE_STRING_FILE_AVOID_NEWLINE));
}
if (flags & WRITE_STRING_FILE_CREATE) {
f = fopen(fn, "we");
if (!f)
return -errno;
} else {
int fd;
/* We manually build our own version of fopen(..., "we") that
* works without O_CREAT */
fd = open(fn, O_WRONLY|O_CLOEXEC|O_NOCTTY);
if (fd < 0)
return -errno;
f = fdopen(fd, "we");
if (!f) {
safe_close(fd);
return -errno;
}
}
return write_string_stream(f, line, !(flags & WRITE_STRING_FILE_AVOID_NEWLINE));
}
int read_one_line_file(const char *fn, char **line) {
_cleanup_fclose_ FILE *f = NULL;
char t[LINE_MAX], *c;

10
src/basic/fileio.h
View File

@ -25,10 +25,14 @@
#include "macro.h"
typedef enum {
WRITE_STRING_FILE_CREATE = 1,
WRITE_STRING_FILE_ATOMIC = 2,
WRITE_STRING_FILE_AVOID_NEWLINE = 4,
} WriteStringFileFlags;
int write_string_stream(FILE *f, const char *line, bool enforce_newline);
int write_string_file(const char *fn, const char *line);
int write_string_file_no_create(const char *fn, const char *line);
int write_string_file_atomic(const char *fn, const char *line);
int write_string_file(const char *fn, const char *line, WriteStringFileFlags flags);
int read_one_line_file(const char *fn, char **line);
int read_full_file(const char *fn, char **contents, size_t *size);

2
src/basic/smack-util.c
View File

@ -139,7 +139,7 @@ int mac_smack_apply_pid(pid_t pid, const char *label) {
return 0;
p = procfs_file_alloca(pid, "attr/current");
r = write_string_file(p, label);
r = write_string_file(p, label, WRITE_STRING_FILE_CREATE);
if (r < 0)
return r;
#endif

2
src/basic/util.c
View File

@ -4716,7 +4716,7 @@ int update_reboot_param_file(const char *param) {
if (param) {
r = write_string_file(REBOOT_PARAM_FILE, param);
r = write_string_file(REBOOT_PARAM_FILE, param, WRITE_STRING_FILE_CREATE);
if (r < 0)
log_error("Failed to write reboot param to "
REBOOT_PARAM_FILE": %s", strerror(-r));

6
src/binfmt/binfmt.c
View File

@ -53,7 +53,7 @@ static int delete_rule(const char *rule) {
if (!fn)
return log_oom();
return write_string_file(fn, "-1");
return write_string_file(fn, "-1", 0);
}
static int apply_rule(const char *rule) {
@ -61,7 +61,7 @@ static int apply_rule(const char *rule) {
delete_rule(rule);
r = write_string_file("/proc/sys/fs/binfmt_misc/register", rule);
r = write_string_file("/proc/sys/fs/binfmt_misc/register", rule, 0);
if (r < 0)
return log_error_errno(r, "Failed to add binary format: %m");
@ -191,7 +191,7 @@ int main(int argc, char *argv[]) {
}
/* Flush out all rules */
write_string_file("/proc/sys/fs/binfmt_misc/status", "-1");
write_string_file("/proc/sys/fs/binfmt_misc/status", "-1", WRITE_STRING_FILE_CREATE);
STRV_FOREACH(f, files) {
k = apply_file(*f, true);

2
src/core/execute.c
View File

@ -1446,7 +1446,7 @@ static int exec_child(
* shouldn't trip up over that. */
sprintf(t, "%i", context->oom_score_adjust);
r = write_string_file("/proc/self/oom_score_adj", t);
r = write_string_file("/proc/self/oom_score_adj", t, WRITE_STRING_FILE_CREATE);
if (r == -EPERM || r == -EACCES) {
log_open();
log_unit_debug_errno(unit, r, "Failed to adjust OOM setting, assuming containerized execution, ignoring: %m");

2
src/core/machine-id-setup.c
View File

@ -260,7 +260,7 @@ int machine_id_setup(const char *root) {
* /run/machine-id as a replacement */
RUN_WITH_UMASK(0022) {
r = write_string_file(run_machine_id, id);
r = write_string_file(run_machine_id, id, WRITE_STRING_FILE_CREATE);
}
if (r < 0) {
(void) unlink(run_machine_id);

2
src/core/main.c
View File

@ -1203,7 +1203,7 @@ static int write_container_id(void) {
if (isempty(c))
return 0;
return write_string_file("/run/systemd/container", c);
return write_string_file("/run/systemd/container", c, WRITE_STRING_FILE_CREATE);
}
int main(int argc, char *argv[]) {

2
src/core/smack-setup.c
View File

@ -221,7 +221,7 @@ int mac_smack_setup(bool *loaded_policy) {
}
#ifdef SMACK_RUN_LABEL
r = write_string_file("/proc/self/attr/current", SMACK_RUN_LABEL);
r = write_string_file("/proc/self/attr/current", SMACK_RUN_LABEL, 0);
if (r)
log_warning("Failed to set SMACK label \"%s\" on self: %s",
SMACK_RUN_LABEL, strerror(-r));

4
src/firstboot/firstboot.c
View File

@ -415,7 +415,7 @@ static int process_hostname(void) {
return 0;
mkdir_parents(etc_hostname, 0755);
r = write_string_file(etc_hostname, arg_hostname);
r = write_string_file(etc_hostname, arg_hostname, WRITE_STRING_FILE_CREATE);
if (r < 0)
return log_error_errno(r, "Failed to write %s: %m", etc_hostname);
@ -436,7 +436,7 @@ static int process_machine_id(void) {
return 0;
mkdir_parents(etc_machine_id, 0755);
r = write_string_file(etc_machine_id, sd_id128_to_string(arg_machine_id, id));
r = write_string_file(etc_machine_id, sd_id128_to_string(arg_machine_id, id), WRITE_STRING_FILE_CREATE);
if (r < 0)
return log_error_errno(r, "Failed to write machine id: %m");

3
src/gpt-auto-generator/gpt-auto-generator.c
View File

@ -183,7 +183,8 @@ static int add_cryptsetup(const char *id, const char *what, bool rw, char **devi
r = write_string_file(p,
"# Automatically generated by systemd-gpt-auto-generator\n\n"
"[Unit]\n"
"JobTimeoutSec=0\n"); /* the binary handles timeouts anyway */
"JobTimeoutSec=0\n",
WRITE_STRING_FILE_CREATE); /* the binary handles timeouts anyway */
if (r < 0)
return log_error_errno(r, "Failed to write device drop-in: %m");

2
src/hibernate-resume/hibernate-resume.c
View File

@ -65,7 +65,7 @@ int main(int argc, char *argv[]) {
return EXIT_FAILURE;
}
r = write_string_file("/sys/power/resume", major_minor);
r = write_string_file("/sys/power/resume", major_minor, WRITE_STRING_FILE_CREATE);
if (r < 0) {
log_error_errno(r, "Failed to write '%s' to /sys/power/resume: %m", major_minor);
return EXIT_FAILURE;

4
src/login/logind-dbus.c
View File

@ -1196,7 +1196,7 @@ static int trigger_device(Manager *m, struct udev_device *d) {
if (!t)
return -ENOMEM;
write_string_file(t, "change");
write_string_file(t, "change", WRITE_STRING_FILE_CREATE);
}
return 0;
@ -1795,7 +1795,7 @@ static int nologin_timeout_handler(
log_info("Creating /run/nologin, blocking further logins...");
r = write_string_file_atomic("/run/nologin", "System is going down.");
r = write_string_file("/run/nologin", "System is going down.", WRITE_STRING_FILE_ATOMIC);
if (r < 0)
log_error_errno(r, "Failed to create /run/nologin: %m");
else

6
src/network/networkd-link.c
View File

@ -1495,7 +1495,7 @@ static int link_set_ipv4_forward(Link *link) {
p = strjoina("/proc/sys/net/ipv4/conf/", link->ifname, "/forwarding");
v = one_zero(link_ipv4_forward_enabled(link));
r = write_string_file_no_create(p, v);
r = write_string_file(p, v, 0);
if (r < 0) {
/* If the right value is set anyway, don't complain */
if (verify_one_line_file(p, v) > 0)
@ -1524,7 +1524,7 @@ static int link_set_ipv6_forward(Link *link) {
p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/forwarding");
v = one_zero(link_ipv6_forward_enabled(link));
r = write_string_file_no_create(p, v);
r = write_string_file(p, v, 0);
if (r < 0) {
/* If the right value is set anyway, don't complain */
if (verify_one_line_file(p, v) > 0)
@ -1553,7 +1553,7 @@ static int link_set_ipv6_privacy_extensions(Link *link) {
p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/use_tempaddr");
xsprintf(buf, "%u", link->network->ipv6_privacy_extensions);
r = write_string_file_no_create(p, buf);
r = write_string_file(p, buf, 0);
if (r < 0) {
/* If the right value is set anyway, don't complain */
if (verify_one_line_file(p, buf) > 0)

8
src/nspawn/nspawn.c
View File

@ -1703,7 +1703,7 @@ static int setup_boot_id(const char *dest) {
id128_format_as_uuid(rnd, as_uuid);
r = write_string_file(from, as_uuid);
r = write_string_file(from, as_uuid, WRITE_STRING_FILE_CREATE);
if (r < 0)
return log_error_errno(r, "Failed to write boot id: %m");
@ -2508,7 +2508,7 @@ static int reset_audit_loginuid(void) {
if (streq(p, "4294967295"))
return 0;
r = write_string_file("/proc/self/loginuid", "4294967295");
r = write_string_file("/proc/self/loginuid", "4294967295", WRITE_STRING_FILE_CREATE);
if (r < 0) {
log_error_errno(r,
"Failed to reset audit login UID. This probably means that your kernel is too\n"
@ -4448,13 +4448,13 @@ static int setup_uid_map(pid_t pid) {
xsprintf(uid_map, "/proc/" PID_FMT "/uid_map", pid);
xsprintf(line, UID_FMT " " UID_FMT " " UID_FMT "\n", 0, arg_uid_shift, arg_uid_range);
r = write_string_file(uid_map, line);
r = write_string_file(uid_map, line, WRITE_STRING_FILE_CREATE);
if (r < 0)
return log_error_errno(r, "Failed to write UID map: %m");
/* We always assign the same UID and GID ranges */
xsprintf(uid_map, "/proc/" PID_FMT "/gid_map", pid);
r = write_string_file(uid_map, line);
r = write_string_file(uid_map, line, WRITE_STRING_FILE_CREATE);
if (r < 0)
return log_error_errno(r, "Failed to write GID map: %m");

2
src/rfkill/rfkill.c
View File

@ -127,7 +127,7 @@ int main(int argc, char *argv[]) {
return EXIT_SUCCESS;
}
r = write_string_file(saved, value);
r = write_string_file(saved, value, WRITE_STRING_FILE_CREATE);
if (r < 0) {
log_error_errno(r, "Failed to write %s: %m", saved);
return EXIT_FAILURE;

2
src/shared/sysctl-util.c
View File

@ -66,7 +66,7 @@ int sysctl_write(const char *property, const char *value) {
log_debug("Setting '%s' to '%s'", property, value);
p = strjoina("/proc/sys/", property);
return write_string_file(p, value);
return write_string_file(p, value, WRITE_STRING_FILE_CREATE);
}
int sysctl_read(const char *property, char **content) {

2
src/sleep/sleep.c
View File

@ -42,7 +42,7 @@ static int write_mode(char **modes) {
STRV_FOREACH(mode, modes) {
int k;
k = write_string_file("/sys/power/disk", *mode);
k = write_string_file("/sys/power/disk", *mode, 0);
if (k == 0)
return 0;

2
src/test/test-btrfs.c
View File

@ -68,7 +68,7 @@ int main(int argc, char *argv[]) {
if (r < 0)
log_error_errno(r, "Failed to make subvolume: %m");
r = write_string_file("/xxxtest/afile", "ljsadhfljasdkfhlkjdsfha");
r = write_string_file("/xxxtest/afile", "ljsadhfljasdkfhlkjdsfha", WRITE_STRING_FILE_CREATE);
if (r < 0)
log_error_errno(r, "Failed to write file: %m");

6
src/test/test-copy.c
View File

@ -43,7 +43,7 @@ static void test_copy_file(void) {
assert_se(fd >= 0);
close(fd);
assert_se(write_string_file(fn, "foo bar bar bar foo") == 0);
assert_se(write_string_file(fn, "foo bar bar bar foo", WRITE_STRING_FILE_CREATE) == 0);
assert_se(copy_file(fn, fn_copy, 0, 0644, 0) == 0);
@ -67,7 +67,7 @@ static void test_copy_file_fd(void) {
out_fd = mkostemp_safe(out_fn, O_RDWR);
assert_se(out_fd >= 0);
assert_se(write_string_file(in_fn, text) == 0);
assert_se(write_string_file(in_fn, text, WRITE_STRING_FILE_CREATE) == 0);
assert_se(copy_file_fd("/a/file/which/does/not/exist/i/guess", out_fd, true) < 0);
assert_se(copy_file_fd(in_fn, out_fd, true) >= 0);
assert_se(lseek(out_fd, SEEK_SET, 0) == 0);
@ -94,7 +94,7 @@ static void test_copy_tree(void) {
char *f = strjoina(original_dir, *p);
assert_se(mkdir_parents(f, 0755) >= 0);
assert_se(write_string_file(f, "file") == 0);
assert_se(write_string_file(f, "file", WRITE_STRING_FILE_CREATE) == 0);
}
STRV_FOREACH_PAIR(link, p, links) {

10
src/test/test-fileio.c
View File

@ -334,7 +334,7 @@ static void test_write_string_file(void) {
fd = mkostemp_safe(fn, O_RDWR);
assert_se(fd >= 0);
assert_se(write_string_file(fn, "boohoo") == 0);
assert_se(write_string_file(fn, "boohoo", WRITE_STRING_FILE_CREATE) == 0);
assert_se(read(fd, buf, sizeof(buf)) == 7);
assert_se(streq(buf, "boohoo\n"));
@ -350,8 +350,8 @@ static void test_write_string_file_no_create(void) {
fd = mkostemp_safe(fn, O_RDWR);
assert_se(fd >= 0);
assert_se(write_string_file_no_create("/a/file/which/does/not/exists/i/guess", "boohoo") < 0);
assert_se(write_string_file_no_create(fn, "boohoo") == 0);
assert_se(write_string_file("/a/file/which/does/not/exists/i/guess", "boohoo", 0) < 0);
assert_se(write_string_file(fn, "boohoo", 0) == 0);
assert_se(read(fd, buf, sizeof(buf)) == strlen("boohoo\n"));
assert_se(streq(buf, "boohoo\n"));
@ -377,8 +377,8 @@ static void test_load_env_file_pairs(void) {
"ANSI_COLOR=\"0;36\"\n"
"HOME_URL=\"https://www.archlinux.org/\"\n"
"SUPPORT_URL=\"https://bbs.archlinux.org/\"\n"
"BUG_REPORT_URL=\"https://bugs.archlinux.org/\"\n"
);
"BUG_REPORT_URL=\"https://bugs.archlinux.org/\"\n",
WRITE_STRING_FILE_CREATE);
assert_se(r == 0);
f = fdopen(fd, "r");

20
src/test/test-util.c
View File

@ -565,14 +565,14 @@ static void test_read_hostname_config(void) {
close(fd);
/* simple hostname */
write_string_file(path, "foo");
write_string_file(path, "foo", WRITE_STRING_FILE_CREATE);
assert_se(read_hostname_config(path, &hostname) == 0);
assert_se(streq(hostname, "foo"));
free(hostname);
hostname = NULL;
/* with comment */
write_string_file(path, "# comment\nfoo");
write_string_file(path, "# comment\nfoo", WRITE_STRING_FILE_CREATE);
assert_se(read_hostname_config(path, &hostname) == 0);
assert_se(hostname);
assert_se(streq(hostname, "foo"));
@ -580,7 +580,7 @@ static void test_read_hostname_config(void) {
hostname = NULL;
/* with comment and extra whitespace */
write_string_file(path, "# comment\n\n foo ");
write_string_file(path, "# comment\n\n foo ", WRITE_STRING_FILE_CREATE);
assert_se(read_hostname_config(path, &hostname) == 0);
assert_se(hostname);
assert_se(streq(hostname, "foo"));
@ -588,7 +588,7 @@ static void test_read_hostname_config(void) {
hostname = NULL;
/* cleans up name */
write_string_file(path, "!foo/bar.com");
write_string_file(path, "!foo/bar.com", WRITE_STRING_FILE_CREATE);
assert_se(read_hostname_config(path, &hostname) == 0);
assert_se(hostname);
assert_se(streq(hostname, "foobar.com"));
@ -597,7 +597,7 @@ static void test_read_hostname_config(void) {
/* no value set */
hostname = (char*) 0x1234;
write_string_file(path, "# nothing here\n");
write_string_file(path, "# nothing here\n", WRITE_STRING_FILE_CREATE);
assert_se(read_hostname_config(path, &hostname) == -ENOENT);
assert_se(hostname == (char*) 0x1234); /* does not touch argument on error */
@ -1191,11 +1191,11 @@ static void test_execute_directory(void) {
masked = strjoina(template_lo, "/masked");
mask = strjoina(template_hi, "/masked");
assert_se(write_string_file(name, "#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/it_works") == 0);
assert_se(write_string_file(name2, "#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/it_works2") == 0);
assert_se(write_string_file(overridden, "#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed") == 0);
assert_se(write_string_file(override, "#!/bin/sh\necho 'Executing '$0") == 0);
assert_se(write_string_file(masked, "#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed") == 0);
assert_se(write_string_file(name, "#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/it_works", WRITE_STRING_FILE_CREATE) == 0);
assert_se(write_string_file(name2, "#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/it_works2", WRITE_STRING_FILE_CREATE) == 0);
assert_se(write_string_file(overridden, "#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed", WRITE_STRING_FILE_CREATE) == 0);
assert_se(write_string_file(override, "#!/bin/sh\necho 'Executing '$0", WRITE_STRING_FILE_CREATE) == 0);
assert_se(write_string_file(masked, "#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed", WRITE_STRING_FILE_CREATE) == 0);
assert_se(symlink("/dev/null", mask) == 0);
assert_se(chmod(name, 0755) == 0);
assert_se(chmod(name2, 0755) == 0);

10
src/udev/udevd.c
View File

@ -398,7 +398,7 @@ static void worker_spawn(Manager *manager, struct event *event) {
prctl(PR_SET_PDEATHSIG, SIGTERM);
/* reset OOM score, we only protect the main daemon */
write_string_file("/proc/self/oom_score_adj", "0");
write_string_file("/proc/self/oom_score_adj", "0", WRITE_STRING_FILE_CREATE);
for (;;) {
struct udev_event *udev_event;
@ -1091,7 +1091,7 @@ static int synthesize_change(struct udev_device *dev) {
*/
log_debug("device %s closed, synthesising 'change'", udev_device_get_devnode(dev));
strscpyl(filename, sizeof(filename), udev_device_get_syspath(dev), "/uevent", NULL);
write_string_file(filename, "change");
write_string_file(filename, "change", WRITE_STRING_FILE_CREATE);
udev_list_entry_foreach(item, udev_enumerate_get_list_entry(e)) {
_cleanup_udev_device_unref_ struct udev_device *d = NULL;
@ -1106,7 +1106,7 @@ static int synthesize_change(struct udev_device *dev) {
log_debug("device %s closed, synthesising partition '%s' 'change'",
udev_device_get_devnode(dev), udev_device_get_devnode(d));
strscpyl(filename, sizeof(filename), udev_device_get_syspath(d), "/uevent", NULL);
write_string_file(filename, "change");
write_string_file(filename, "change", WRITE_STRING_FILE_CREATE);
}
return 0;
@ -1114,7 +1114,7 @@ static int synthesize_change(struct udev_device *dev) {
log_debug("device %s closed, synthesising 'change'", udev_device_get_devnode(dev));
strscpyl(filename, sizeof(filename), udev_device_get_syspath(dev), "/uevent", NULL);
write_string_file(filename, "change");
write_string_file(filename, "change", WRITE_STRING_FILE_CREATE);
return 0;
}
@ -1747,7 +1747,7 @@ int main(int argc, char *argv[]) {
setsid();
write_string_file("/proc/self/oom_score_adj", "-1000");
write_string_file("/proc/self/oom_score_adj", "-1000", WRITE_STRING_FILE_CREATE);
}
r = run(fd_ctrl, fd_uevent, cgroup);

2
src/user-sessions/user-sessions.c
View File

@ -65,7 +65,7 @@ int main(int argc, char*argv[]) {
} else if (streq(argv[1], "stop")) {
int r;
r = write_string_file_atomic("/run/nologin", "System is going down.");
r = write_string_file("/run/nologin", "System is going down.", WRITE_STRING_FILE_ATOMIC);
if (r < 0) {
log_error_errno(r, "Failed to create /run/nologin: %m");
return EXIT_FAILURE;

4
src/vconsole/vconsole-setup.c
View File

@ -56,7 +56,7 @@ static int disable_utf8(int fd) {
if (k < 0)
r = k;
k = write_string_file("/sys/module/vt/parameters/default_utf8", "0");
k = write_string_file("/sys/module/vt/parameters/default_utf8", "0", WRITE_STRING_FILE_CREATE);
if (k < 0)
r = k;
@ -89,7 +89,7 @@ static int enable_utf8(int fd) {
if (k < 0)
r = k;
k = write_string_file("/sys/module/vt/parameters/default_utf8", "1");
k = write_string_file("/sys/module/vt/parameters/default_utf8", "1", WRITE_STRING_FILE_CREATE);
if (k < 0)
r = k;