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fileio: split write_one_line_file into two

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The new function allows one to write to an already
open file.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2013-05-04 11:38:23 -04:00 committed by Lennart Poettering
parent 9494131b91
commit b4bc041b17
2 changed files with 18 additions and 9 deletions
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23
src/shared/fileio.c
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@ -24,16 +24,8 @@
#include "util.h"
#include "strv.h"
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;
int write_string_to_file(FILE *f, const char *line) {
errno = 0;
fputs(line, f);
if (!endswith(line, "\n"))
@ -47,6 +39,19 @@ int write_string_file(const char *fn, const char *line) {
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_to_file(f, line);
}
int write_string_file_atomic(const char *fn, const char *line) {
_cleanup_fclose_ FILE *f = NULL;
_cleanup_free_ char *p = NULL;

4
src/shared/fileio.h
View File

@ -21,10 +21,14 @@
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <stddef.h>
#include <stdio.h>
#include "macro.h"
int write_string_to_file(FILE *f, const char *line);
int write_string_file(const char *fn, const char *line);
int write_string_file_atomic(const char *fn, const char *line);
int read_one_line_file(const char *fn, char **line);
int read_full_file(const char *fn, char **contents, size_t *size);