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tree-wide: set WRITE_STRING_FILE_DISABLE_BUFFER flag when we write files under /proc or /sys

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This commit is contained in:
Yu Watanabe
2018-11-06 21:24:03 +09:00
parent 76cdddfb9d
commit 57512c893e
14 changed files with 39 additions and 37 deletions
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src/nspawn/nspawn-cgroup.c
+1 -1
View File
@@ -122,7 +122,7 @@ int sync_cgroup(pid_t pid, CGroupUnified unified_requested, uid_t uid_shift) {
(void) mkdir_parents(fn, 0755);
sprintf(pid_string, PID_FMT, pid);
r = write_string_file(fn, pid_string, 0);
r = write_string_file(fn, pid_string, WRITE_STRING_FILE_DISABLE_BUFFER);
if (r < 0) {
log_error_errno(r, "Failed to move process: %m");
goto finish;
src/nspawn/nspawn.c
+3 -3
View File
@@ -2176,7 +2176,7 @@ static int reset_audit_loginuid(void) {
if (streq(p, "4294967295"))
return 0;
r = write_string_file("/proc/self/loginuid", "4294967295", 0);
r = write_string_file("/proc/self/loginuid", "4294967295", WRITE_STRING_FILE_DISABLE_BUFFER);
if (r < 0) {
log_error_errno(r,
"Failed to reset audit login UID. This probably means that your kernel is too\n"
@@ -3265,13 +3265,13 @@ 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, 0);
r = write_string_file(uid_map, line, WRITE_STRING_FILE_DISABLE_BUFFER);
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, 0);
r = write_string_file(uid_map, line, WRITE_STRING_FILE_DISABLE_BUFFER);
if (r < 0)
return log_error_errno(r, "Failed to write GID map: %m");