From eaf26fdad00448b8cd336eb5db51e0baa8d8e588 Mon Sep 17 00:00:00 2001
From: Chen Qi <Qi.Chen@windriver.com>
Date: Mon, 16 Dec 2024 14:37:25 +0800
Subject: [PATCH 12/26] do not disable buffer in writing files

Do not disable buffer in writing files, otherwise we get
failure at boot for musl like below.

  [!!!!!!] Failed to allocate manager object.

And there will be other failures, critical or not critical.
This is specific to musl.

Upstream-Status: Inappropriate [musl]

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
[Rebased for v242]
Signed-off-by: Andrej Valek <andrej.valek@siemens.com>
[rebased for systemd 243]
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
[rebased for systemd 254]
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
[rebased for systemd 255.1]
---
 src/basic/cgroup-util.c              |  4 ++--
 src/basic/namespace-util.c           |  4 ++--
 src/basic/procfs-util.c              |  4 ++--
 src/basic/sysctl-util.c              |  2 +-
 src/binfmt/binfmt.c                  |  6 +++---
 src/core/cgroup.c                    |  2 +-
 src/core/ipe-setup.c                 |  2 +-
 src/core/main.c                      |  2 +-
 src/core/smack-setup.c               |  6 +++---
 src/home/homework.c                  |  2 +-
 src/libsystemd/sd-device/sd-device.c |  2 +-
 src/nspawn/nspawn-cgroup.c           |  2 +-
 src/nspawn/nspawn.c                  |  6 +++---
 src/shared/binfmt-util.c             |  2 +-
 src/shared/cgroup-setup.c            | 12 ++++++------
 src/shared/coredump-util.c           |  2 +-
 src/shared/hibernate-util.c          |  4 ++--
 src/shared/smack-util.c              |  2 +-
 src/sleep/sleep.c                    |  2 +-
 src/storagetm/storagetm.c            | 24 ++++++++++++------------
 src/vconsole/vconsole-setup.c        |  2 +-
 21 files changed, 47 insertions(+), 47 deletions(-)

diff --git a/src/basic/cgroup-util.c b/src/basic/cgroup-util.c
index 309dccb45a..7aec5072a0 100644
--- a/src/basic/cgroup-util.c
+++ b/src/basic/cgroup-util.c
@@ -495,7 +495,7 @@ int cg_kill_kernel_sigkill(const char *path) {
         if (r < 0)
                 return r;
 
-        r = write_string_file(killfile, "1", WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file(killfile, "1", 0);
         if (r < 0)
                 return log_debug_errno(r, "Failed to write to cgroup.kill for cgroup '%s': %m", path);
 
@@ -1721,7 +1721,7 @@ int cg_set_attribute(const char *controller, const char *path, const char *attri
         if (r < 0)
                 return r;
 
-        return write_string_file(p, value, WRITE_STRING_FILE_DISABLE_BUFFER);
+        return write_string_file(p, value, 0);
 }
 
 int cg_get_attribute(const char *controller, const char *path, const char *attribute, char **ret) {
diff --git a/src/basic/namespace-util.c b/src/basic/namespace-util.c
index 332e8cdfd5..804498127d 100644
--- a/src/basic/namespace-util.c
+++ b/src/basic/namespace-util.c
@@ -354,12 +354,12 @@ int userns_acquire(const char *uid_map, const char *gid_map) {
                 freeze();
 
         xsprintf(path, "/proc/" PID_FMT "/uid_map", pid);
-        r = write_string_file(path, uid_map, WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file(path, uid_map, 0);
         if (r < 0)
                 return log_debug_errno(r, "Failed to write UID map: %m");
 
         xsprintf(path, "/proc/" PID_FMT "/gid_map", pid);
-        r = write_string_file(path, gid_map, WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file(path, gid_map, 0);
         if (r < 0)
                 return log_debug_errno(r, "Failed to write GID map: %m");
 
diff --git a/src/basic/procfs-util.c b/src/basic/procfs-util.c
index d7cfcd9105..58fb5918a3 100644
--- a/src/basic/procfs-util.c
+++ b/src/basic/procfs-util.c
@@ -63,13 +63,13 @@ int procfs_tasks_set_limit(uint64_t limit) {
          * decrease it, as threads-max is the much more relevant sysctl. */
         if (limit > pid_max-1) {
                 sprintf(buffer, "%" PRIu64, limit+1); /* Add one, since PID 0 is not a valid PID */
-                r = write_string_file("/proc/sys/kernel/pid_max", buffer, WRITE_STRING_FILE_DISABLE_BUFFER);
+                r = write_string_file("/proc/sys/kernel/pid_max", buffer, 0);
                 if (r < 0)
                         return r;
         }
 
         sprintf(buffer, "%" PRIu64, limit);
-        r = write_string_file("/proc/sys/kernel/threads-max", buffer, WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file("/proc/sys/kernel/threads-max", buffer, 0);
         if (r < 0) {
                 uint64_t threads_max;
 
diff --git a/src/basic/sysctl-util.c b/src/basic/sysctl-util.c
index 2feb4917d7..4c74620a00 100644
--- a/src/basic/sysctl-util.c
+++ b/src/basic/sysctl-util.c
@@ -97,7 +97,7 @@ int sysctl_write_full(const char *property, const char *value, Hashmap **shadow)
         if (r < 0)
                 return r;
 
-        return write_string_file(p, value, WRITE_STRING_FILE_VERIFY_ON_FAILURE | WRITE_STRING_FILE_DISABLE_BUFFER | WRITE_STRING_FILE_SUPPRESS_REDUNDANT_VIRTUAL);
+        return write_string_file(p, value, WRITE_STRING_FILE_VERIFY_ON_FAILURE | 0 | WRITE_STRING_FILE_SUPPRESS_REDUNDANT_VIRTUAL);
 }
 
 int sysctl_writef(const char *property, const char *format, ...) {
diff --git a/src/binfmt/binfmt.c b/src/binfmt/binfmt.c
index d21f3f79ff..258607cc7e 100644
--- a/src/binfmt/binfmt.c
+++ b/src/binfmt/binfmt.c
@@ -30,7 +30,7 @@ static bool arg_unregister = false;
 
 static int delete_rule(const char *rulename) {
         const char *fn = strjoina("/proc/sys/fs/binfmt_misc/", rulename);
-        return write_string_file(fn, "-1", WRITE_STRING_FILE_DISABLE_BUFFER);
+        return write_string_file(fn, "-1", 0);
 }
 
 static int apply_rule(const char *filename, unsigned line, const char *rule) {
@@ -58,7 +58,7 @@ static int apply_rule(const char *filename, unsigned line, const char *rule) {
         if (r >= 0)
                 log_debug("%s:%u: Rule '%s' deleted.", filename, line, rulename);
 
-        r = write_string_file("/proc/sys/fs/binfmt_misc/register", rule, WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file("/proc/sys/fs/binfmt_misc/register", rule, 0);
         if (r < 0)
                 return log_error_errno(r, "%s:%u: Failed to add binary format '%s': %m",
                                        filename, line, rulename);
@@ -248,7 +248,7 @@ static int run(int argc, char *argv[]) {
                         return r;
 
                 /* Flush out all rules */
-                r = write_string_file("/proc/sys/fs/binfmt_misc/status", "-1", WRITE_STRING_FILE_DISABLE_BUFFER);
+                r = write_string_file("/proc/sys/fs/binfmt_misc/status", "-1", 0);
                 if (r < 0)
                         log_warning_errno(r, "Failed to flush binfmt_misc rules, ignoring: %m");
                 else
diff --git a/src/core/cgroup.c b/src/core/cgroup.c
index 6933aae54d..ab6fccc0e4 100644
--- a/src/core/cgroup.c
+++ b/src/core/cgroup.c
@@ -5167,7 +5167,7 @@ int unit_cgroup_freezer_action(Unit *u, FreezerAction action) {
         if (r < 0)
                 return r;
 
-        r = write_string_file(path, one_zero(objective == FREEZER_FROZEN), WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file(path, one_zero(objective == FREEZER_FROZEN), 0);
         if (r < 0)
                 return r;
 
diff --git a/src/core/ipe-setup.c b/src/core/ipe-setup.c
index 4648d43829..80d03d87d4 100644
--- a/src/core/ipe-setup.c
+++ b/src/core/ipe-setup.c
@@ -94,7 +94,7 @@ int ipe_setup(void) {
                 if (!activate_path)
                         return log_oom();
 
-                r = write_string_file(activate_path, "1", WRITE_STRING_FILE_DISABLE_BUFFER);
+                r = write_string_file(activate_path, "1", 0);
                 if (r == -ESTALE) {
                         log_debug_errno(r,
                                         "IPE policy %s is already loaded with a version that is equal or higher, skipping.",
diff --git a/src/core/main.c b/src/core/main.c
index 172742c769..e68ce2a6d8 100644
--- a/src/core/main.c
+++ b/src/core/main.c
@@ -1812,7 +1812,7 @@ static void initialize_core_pattern(bool skip_setup) {
         if (getpid_cached() != 1)
                 return;
 
-        r = write_string_file("/proc/sys/kernel/core_pattern", arg_early_core_pattern, WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file("/proc/sys/kernel/core_pattern", arg_early_core_pattern, 0);
         if (r < 0)
                 log_warning_errno(r, "Failed to write '%s' to /proc/sys/kernel/core_pattern, ignoring: %m",
                                   arg_early_core_pattern);
diff --git a/src/core/smack-setup.c b/src/core/smack-setup.c
index 7ea902b6f9..ee4cd56023 100644
--- a/src/core/smack-setup.c
+++ b/src/core/smack-setup.c
@@ -321,17 +321,17 @@ int mac_smack_setup(bool *loaded_policy) {
         }
 
 #if HAVE_SMACK_RUN_LABEL
-        r = write_string_file("/proc/self/attr/current", SMACK_RUN_LABEL, WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file("/proc/self/attr/current", SMACK_RUN_LABEL, 0);
         if (r < 0)
                 log_warning_errno(r, "Failed to set SMACK label \"" SMACK_RUN_LABEL "\" on self: %m");
-        r = write_string_file("/sys/fs/smackfs/ambient", SMACK_RUN_LABEL, WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file("/sys/fs/smackfs/ambient", SMACK_RUN_LABEL, 0);
         if (r < 0)
                 log_warning_errno(r, "Failed to set SMACK ambient label \"" SMACK_RUN_LABEL "\": %m");
         r = write_string_file("/sys/fs/smackfs/netlabel",
                               "0.0.0.0/0 " SMACK_RUN_LABEL, WRITE_STRING_FILE_DISABLE_BUFFER);
         if (r < 0)
                 log_warning_errno(r, "Failed to set SMACK netlabel rule \"0.0.0.0/0 " SMACK_RUN_LABEL "\": %m");
-        r = write_string_file("/sys/fs/smackfs/netlabel", "127.0.0.1 -CIPSO", WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file("/sys/fs/smackfs/netlabel", "127.0.0.1 -CIPSO", 0);
         if (r < 0)
                 log_warning_errno(r, "Failed to set SMACK netlabel rule \"127.0.0.1 -CIPSO\": %m");
 #endif
diff --git a/src/home/homework.c b/src/home/homework.c
index 00e74894b3..7457113efe 100644
--- a/src/home/homework.c
+++ b/src/home/homework.c
@@ -304,7 +304,7 @@ static void drop_caches_now(void) {
          * for details. We write "3" into /proc/sys/vm/drop_caches to ensure dentries/inodes are flushed, but
          * not more. */
 
-        r = write_string_file("/proc/sys/vm/drop_caches", "3\n", WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file("/proc/sys/vm/drop_caches", "3\n", 0);
         if (r < 0)
                 log_warning_errno(r, "Failed to drop caches, ignoring: %m");
         else
diff --git a/src/libsystemd/sd-device/sd-device.c b/src/libsystemd/sd-device/sd-device.c
index 01fa90b1ff..83ab655bf4 100644
--- a/src/libsystemd/sd-device/sd-device.c
+++ b/src/libsystemd/sd-device/sd-device.c
@@ -2563,7 +2563,7 @@ _public_ int sd_device_set_sysattr_value(sd_device *device, const char *sysattr,
         if (!value)
                 return -ENOMEM;
 
-        r = write_string_file(path, value, WRITE_STRING_FILE_DISABLE_BUFFER | WRITE_STRING_FILE_NOFOLLOW);
+        r = write_string_file(path, value, 0 | WRITE_STRING_FILE_NOFOLLOW);
         if (r < 0) {
                 /* On failure, clear cache entry, as we do not know how it fails. */
                 device_remove_cached_sysattr_value(device, sysattr);
diff --git a/src/nspawn/nspawn-cgroup.c b/src/nspawn/nspawn-cgroup.c
index 4f28b4a225..c899c218b2 100644
--- a/src/nspawn/nspawn-cgroup.c
+++ b/src/nspawn/nspawn-cgroup.c
@@ -93,7 +93,7 @@ int sync_cgroup(pid_t pid, CGroupUnified unified_requested, uid_t uid_shift) {
         fn = strjoina(tree, cgroup, "/cgroup.procs");
 
         sprintf(pid_string, PID_FMT, pid);
-        r = write_string_file(fn, pid_string, WRITE_STRING_FILE_DISABLE_BUFFER|WRITE_STRING_FILE_MKDIR_0755);
+        r = write_string_file(fn, pid_string, 0|WRITE_STRING_FILE_MKDIR_0755);
         if (r < 0) {
                 log_error_errno(r, "Failed to move process: %m");
                 goto finish;
diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
index 500725d35f..745b6815db 100644
--- a/src/nspawn/nspawn.c
+++ b/src/nspawn/nspawn.c
@@ -2857,7 +2857,7 @@ static int reset_audit_loginuid(void) {
         if (streq(p, "4294967295"))
                 return 0;
 
-        r = write_string_file("/proc/self/loginuid", "4294967295", WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file("/proc/self/loginuid", "4294967295", 0);
         if (r < 0) {
                 log_error_errno(r,
                                 "Failed to reset audit login UID. This probably means that your kernel is too\n"
@@ -4588,7 +4588,7 @@ static int setup_uid_map(
                 return log_oom();
 
         xsprintf(uid_map, "/proc/" PID_FMT "/uid_map", pid);
-        r = write_string_file(uid_map, s, WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file(uid_map, s, 0);
         if (r < 0)
                 return log_error_errno(r, "Failed to write UID map: %m");
 
@@ -4598,7 +4598,7 @@ static int setup_uid_map(
                 return log_oom();
 
         xsprintf(uid_map, "/proc/" PID_FMT "/gid_map", pid);
-        r = write_string_file(uid_map, s, WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file(uid_map, s, 0);
         if (r < 0)
                 return log_error_errno(r, "Failed to write GID map: %m");
 
diff --git a/src/shared/binfmt-util.c b/src/shared/binfmt-util.c
index a26175474b..1413a9c72c 100644
--- a/src/shared/binfmt-util.c
+++ b/src/shared/binfmt-util.c
@@ -46,7 +46,7 @@ int disable_binfmt(void) {
                 return 0;
         }
 
-        r = write_string_file("/proc/sys/fs/binfmt_misc/status", "-1", WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file("/proc/sys/fs/binfmt_misc/status", "-1", 0);
         if (r < 0)
                 return log_warning_errno(r, "Failed to unregister binfmt_misc entries: %m");
 
diff --git a/src/shared/cgroup-setup.c b/src/shared/cgroup-setup.c
index 49d40f60d8..0f4aa8512a 100644
--- a/src/shared/cgroup-setup.c
+++ b/src/shared/cgroup-setup.c
@@ -369,7 +369,7 @@ int cg_attach(const char *controller, const char *path, pid_t pid) {
 
         xsprintf(c, PID_FMT "\n", pid);
 
-        r = write_string_file(fs, c, WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file(fs, c, 0);
         if (r == -EOPNOTSUPP && cg_is_threaded(path) > 0)
                 /* When the threaded mode is used, we cannot read/write the file. Let's return recognizable error. */
                 return -EUCLEAN;
@@ -399,7 +399,7 @@ int cg_fd_attach(int fd, pid_t pid) {
 
         xsprintf(c, PID_FMT "\n", pid);
 
-        return write_string_file_at(fd, "cgroup.procs", c, WRITE_STRING_FILE_DISABLE_BUFFER);
+        return write_string_file_at(fd, "cgroup.procs", c, 0);
 }
 
 int cg_attach_fallback(const char *controller, const char *path, pid_t pid) {
@@ -1049,7 +1049,7 @@ int cg_install_release_agent(const char *controller, const char *agent) {
 
         sc = strstrip(contents);
         if (isempty(sc)) {
-                r = write_string_file(fs, agent, WRITE_STRING_FILE_DISABLE_BUFFER);
+                r = write_string_file(fs, agent, 0);
                 if (r < 0)
                         return r;
         } else if (!path_equal(sc, agent))
@@ -1067,7 +1067,7 @@ int cg_install_release_agent(const char *controller, const char *agent) {
 
         sc = strstrip(contents);
         if (streq(sc, "0")) {
-                r = write_string_file(fs, "1", WRITE_STRING_FILE_DISABLE_BUFFER);
+                r = write_string_file(fs, "1", 0);
                 if (r < 0)
                         return r;
 
@@ -1094,7 +1094,7 @@ int cg_uninstall_release_agent(const char *controller) {
         if (r < 0)
                 return r;
 
-        r = write_string_file(fs, "0", WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file(fs, "0", 0);
         if (r < 0)
                 return r;
 
@@ -1104,7 +1104,7 @@ int cg_uninstall_release_agent(const char *controller) {
         if (r < 0)
                 return r;
 
-        r = write_string_file(fs, "", WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file(fs, "", 0);
         if (r < 0)
                 return r;
 
diff --git a/src/shared/coredump-util.c b/src/shared/coredump-util.c
index 805503f366..3234a1d76e 100644
--- a/src/shared/coredump-util.c
+++ b/src/shared/coredump-util.c
@@ -173,7 +173,7 @@ void disable_coredumps(void) {
         if (detect_container() > 0)
                 return;
 
-        r = write_string_file("/proc/sys/kernel/core_pattern", "|/bin/false", WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file("/proc/sys/kernel/core_pattern", "|/bin/false", 0);
         if (r < 0)
                 log_debug_errno(r, "Failed to turn off coredumps, ignoring: %m");
 }
diff --git a/src/shared/hibernate-util.c b/src/shared/hibernate-util.c
index 1213fdc2c7..4c26e6a4ee 100644
--- a/src/shared/hibernate-util.c
+++ b/src/shared/hibernate-util.c
@@ -495,7 +495,7 @@ int write_resume_config(dev_t devno, uint64_t offset, const char *device) {
 
         /* We write the offset first since it's safer. Note that this file is only available in 4.17+, so
          * fail gracefully if it doesn't exist and we're only overwriting it with 0. */
-        r = write_string_file("/sys/power/resume_offset", offset_str, WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file("/sys/power/resume_offset", offset_str, 0);
         if (r == -ENOENT) {
                 if (offset != 0)
                         return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
@@ -511,7 +511,7 @@ int write_resume_config(dev_t devno, uint64_t offset, const char *device) {
                 log_debug("Wrote resume_offset=%s for device '%s' to /sys/power/resume_offset.",
                           offset_str, device);
 
-        r = write_string_file("/sys/power/resume", devno_str, WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file("/sys/power/resume", devno_str, 0);
         if (r < 0)
                 return log_error_errno(r,
                                        "Failed to write device '%s' (%s) to /sys/power/resume: %m",
diff --git a/src/shared/smack-util.c b/src/shared/smack-util.c
index d0a79b2635..0c82d9943a 100644
--- a/src/shared/smack-util.c
+++ b/src/shared/smack-util.c
@@ -113,7 +113,7 @@ 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, WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file(p, label, 0);
         if (r < 0)
                 return r;
 
diff --git a/src/sleep/sleep.c b/src/sleep/sleep.c
index 181bb4ccef..2dbb3f4bc6 100644
--- a/src/sleep/sleep.c
+++ b/src/sleep/sleep.c
@@ -158,7 +158,7 @@ static int write_mode(const char *path, char * const *modes) {
         assert(path);
 
         STRV_FOREACH(mode, modes) {
-                r = write_string_file(path, *mode, WRITE_STRING_FILE_DISABLE_BUFFER);
+                r = write_string_file(path, *mode, 0);
                 if (r >= 0) {
                         log_debug("Using sleep mode '%s' for %s.", *mode, path);
                         return 0;
diff --git a/src/storagetm/storagetm.c b/src/storagetm/storagetm.c
index ca8e886d37..5c27c54f09 100644
--- a/src/storagetm/storagetm.c
+++ b/src/storagetm/storagetm.c
@@ -197,7 +197,7 @@ static int nvme_subsystem_unlink(NvmeSubsystem *s) {
                                         if (!enable_fn)
                                                 return log_oom();
 
-                                        r = write_string_file_at(namespaces_fd, enable_fn, "0", WRITE_STRING_FILE_DISABLE_BUFFER);
+                                        r = write_string_file_at(namespaces_fd, enable_fn, "0", 0);
                                         if (r < 0)
                                                 log_warning_errno(r, "Failed to disable namespace '%s' of NVME subsystem '%s', ignoring: %m", e->d_name, s->name);
 
@@ -265,7 +265,7 @@ static int nvme_subsystem_write_metadata(int subsystem_fd, sd_device *device) {
                 _cleanup_free_ char *truncated = strndup(w, 40); /* kernel refuses more than 40 chars (as per nvme spec) */
 
                 /* The default string stored in 'attr_model' is "Linux" btw. */
-                r = write_string_file_at(subsystem_fd, "attr_model", truncated, WRITE_STRING_FILE_DISABLE_BUFFER);
+                r = write_string_file_at(subsystem_fd, "attr_model", truncated, 0);
                 if (r < 0)
                         log_warning_errno(r, "Failed to set model of subsystem to '%s', ignoring: %m", w);
         }
@@ -279,7 +279,7 @@ static int nvme_subsystem_write_metadata(int subsystem_fd, sd_device *device) {
                         return log_oom();
 
                  /* The default string stored in 'attr_firmware' is `uname -r` btw, but truncated to 8 chars. */
-                r = write_string_file_at(subsystem_fd, "attr_firmware", truncated, WRITE_STRING_FILE_DISABLE_BUFFER);
+                r = write_string_file_at(subsystem_fd, "attr_firmware", truncated, 0);
                 if (r < 0)
                         log_warning_errno(r, "Failed to set model of subsystem to '%s', ignoring: %m", truncated);
         }
@@ -306,7 +306,7 @@ static int nvme_subsystem_write_metadata(int subsystem_fd, sd_device *device) {
                 if (!truncated)
                         return log_oom();
 
-                r = write_string_file_at(subsystem_fd, "attr_serial", truncated, WRITE_STRING_FILE_DISABLE_BUFFER);
+                r = write_string_file_at(subsystem_fd, "attr_serial", truncated, 0);
                 if (r < 0)
                         log_warning_errno(r, "Failed to set serial of subsystem to '%s', ignoring: %m", truncated);
         }
@@ -356,7 +356,7 @@ static int nvme_namespace_write_metadata(int namespace_fd, sd_device *device, co
                 id = id128_digest(j, l);
         }
 
-        r = write_string_file_at(namespace_fd, "device_uuid", SD_ID128_TO_UUID_STRING(id), WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file_at(namespace_fd, "device_uuid", SD_ID128_TO_UUID_STRING(id), 0);
         if (r < 0)
                 log_warning_errno(r, "Failed to set uuid of namespace to '%s', ignoring: %m", SD_ID128_TO_UUID_STRING(id));
 
@@ -419,7 +419,7 @@ static int nvme_subsystem_add(const char *node, int consumed_fd, sd_device *devi
         if (subsystem_fd < 0)
                 return log_error_errno(subsystem_fd, "Failed to create NVME subsystem '%s': %m", j);
 
-        r = write_string_file_at(subsystem_fd, "attr_allow_any_host", "1", WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file_at(subsystem_fd, "attr_allow_any_host", "1", 0);
         if (r < 0)
                 return log_error_errno(r, "Failed to set 'attr_allow_any_host' flag: %m");
 
@@ -434,11 +434,11 @@ static int nvme_subsystem_add(const char *node, int consumed_fd, sd_device *devi
 
         /* We use /proc/$PID/fd/$FD rather than /proc/self/fd/$FD, because this string is visible to others
          * via configfs, and by including the PID it's clear to who the stuff belongs. */
-        r = write_string_file_at(namespace_fd, "device_path", FORMAT_PROC_PID_FD_PATH(0, fd), WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file_at(namespace_fd, "device_path", FORMAT_PROC_PID_FD_PATH(0, fd), 0);
         if (r < 0)
                 return log_error_errno(r, "Failed to write 'device_path' attribute: %m");
 
-        r = write_string_file_at(namespace_fd, "enable", "1", WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file_at(namespace_fd, "enable", "1", 0);
         if (r < 0)
                 return log_error_errno(r, "Failed to write 'enable' attribute: %m");
 
@@ -568,19 +568,19 @@ static int nvme_port_add_portnr(
                 return 0;
         }
 
-        r = write_string_file_at(port_fd, "addr_adrfam", af_to_ipv4_ipv6(ip_family), WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file_at(port_fd, "addr_adrfam", af_to_ipv4_ipv6(ip_family), 0);
         if (r < 0)
                 return log_error_errno(r, "Failed to set address family on NVME port %" PRIu16 ": %m", portnr);
 
-        r = write_string_file_at(port_fd, "addr_trtype", "tcp", WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file_at(port_fd, "addr_trtype", "tcp", 0);
         if (r < 0)
                 return log_error_errno(r, "Failed to set transport type on NVME port %" PRIu16 ": %m", portnr);
 
-        r = write_string_file_at(port_fd, "addr_trsvcid", fname, WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file_at(port_fd, "addr_trsvcid", fname, 0);
         if (r < 0)
                 return log_error_errno(r, "Failed to set IP port on NVME port %" PRIu16 ": %m", portnr);
 
-        r = write_string_file_at(port_fd, "addr_traddr", ip_family == AF_INET6 ? "::" : "0.0.0.0", WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file_at(port_fd, "addr_traddr", ip_family == AF_INET6 ? "::" : "0.0.0.0", 0);
         if (r < 0)
                 return log_error_errno(r, "Failed to set IP address on NVME port %" PRIu16 ": %m", portnr);
 
diff --git a/src/vconsole/vconsole-setup.c b/src/vconsole/vconsole-setup.c
index ba742dda69..6f20e81615 100644
--- a/src/vconsole/vconsole-setup.c
+++ b/src/vconsole/vconsole-setup.c
@@ -277,7 +277,7 @@ static int toggle_utf8_vc(const char *name, int fd, bool utf8) {
 static int toggle_utf8_sysfs(bool utf8) {
         int r;
 
-        r = write_string_file("/sys/module/vt/parameters/default_utf8", one_zero(utf8), WRITE_STRING_FILE_DISABLE_BUFFER);
+        r = write_string_file("/sys/module/vt/parameters/default_utf8", one_zero(utf8), 0);
         if (r < 0)
                 return log_warning_errno(r, "Failed to %s sysfs UTF-8 flag: %m", enable_disable(utf8));
 
-- 
2.34.1

