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truncate: match coreutils truncate behaviour 

improvements:
- when truncate on a file failed proceed with the rest.
- when truncate on a file failed exit with EXIT_FAILURE.

Signed-off-by: Hiltjo Posthuma <hiltjo@codemadness.org>
This commit is contained in:
Hiltjo Posthuma 2014-02-14 14:35:01 +01:00 committed by sin
parent 923773f9d8
commit 780fd613eb
1 changed files with 15 additions and 6 deletions
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21
truncate.c
View File

@ -4,6 +4,8 @@
#include <unistd.h> #include <unistd.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "util.h" #include "util.h"
static void static void
@ -16,7 +18,7 @@ int
main(int argc, char *argv[]) main(int argc, char *argv[])
{ {
int cflag = 0, sflag = 0; int cflag = 0, sflag = 0;
int fd, i; int fd, i, ret = EXIT_SUCCESS;
long size; long size;
ARGBEGIN { ARGBEGIN {
@ -36,11 +38,18 @@ main(int argc, char *argv[])
for (i = 0; i < argc; i++) { for (i = 0; i < argc; i++) {
fd = open(argv[i], O_WRONLY | (cflag ? 0 : O_CREAT), 0644); fd = open(argv[i], O_WRONLY | (cflag ? 0 : O_CREAT), 0644);
if (fd < 0) if (fd < 0) {
eprintf("open %s:", argv[i]); fprintf(stderr, "open: cannot open `%s' for writing: %s\n",
if (ftruncate(fd, size) < 0) argv[i], strerror(errno));
eprintf("ftruncate: %s:", argv[i]); ret = EXIT_FAILURE;
continue;
}
if (ftruncate(fd, size) < 0) {
fprintf(stderr, "truncate: cannot open `%s' for writing: %s\n",
argv[i], strerror(errno));
ret = EXIT_FAILURE;
}
close(fd); close(fd);
} }
return EXIT_SUCCESS; return ret;
} }