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src/shared/util.h: import loop_write() from upstream

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Signed-off-by: Anthony G. Basile <blueness@gentoo.org>
This commit is contained in:
Anthony G. Basile 2015-05-27 08:16:14 -04:00
parent 233b58f3ac
commit 8ab818626d
2 changed files with 39 additions and 0 deletions
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38
src/shared/util.c
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@ -906,6 +906,44 @@ int loop_read_exact(int fd, void *buf, size_t nbytes, bool do_poll) {
return 0;
}
int loop_write(int fd, const void *buf, size_t nbytes, bool do_poll) {
const uint8_t *p = buf;
assert(fd >= 0);
assert(buf);
errno = 0;
do {
ssize_t k;
k = write(fd, p, nbytes);
if (k < 0) {
if (errno == EINTR)
continue;
if (errno == EAGAIN && do_poll) {
/* We knowingly ignore any return value here,
* and expect that any error/EOF is reported
* via write() */
fd_wait_for_event(fd, POLLOUT, USEC_INFINITY);
continue;
}
return -errno;
}
if (nbytes > 0 && k == 0) /* Can't really happen */
return -EIO;
p += k;
nbytes -= k;
} while (nbytes > 0);
return 0;
}
char* dirname_malloc(const char *path) {
char *d, *dir, *dir2;

1
src/shared/util.h
View File

@ -221,6 +221,7 @@ int fopen_temporary(const char *path, FILE **_f, char **_temp_path);
ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll);
int loop_read_exact(int fd, void *buf, size_t nbytes, bool do_poll);
int loop_write(int fd, const void *buf, size_t nbytes, bool do_poll);
char* dirname_malloc(const char *path);