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/* Copyright (c) 2002-2018 Dovecot authors, see the included COPYING file */
#include "lib.h"
#include "write-full.h"
#include <unistd.h>
int write_full(int fd, const void *data, size_t size)
{
ssize_t ret;
while (size > 0) {
ret = write(fd, data, size < SSIZE_T_MAX ? size : SSIZE_T_MAX);
if (unlikely(ret < 0))
return -1;
if (unlikely(ret == 0)) {
/* nothing was written, only reason for this should
be out of disk space */
errno = ENOSPC;
return -1;
}
data = CONST_PTR_OFFSET(data, ret);
size -= ret;
}
return 0;
}
int pwrite_full(int fd, const void *data, size_t size, off_t offset)
{
ssize_t ret;
while (size > 0) {
ret = pwrite(fd, data, size < SSIZE_T_MAX ?
size : SSIZE_T_MAX, offset);
if (unlikely(ret < 0))
return -1;
if (unlikely(ret == 0)) {
/* nothing was written, only reason for this should
be out of disk space */
errno = ENOSPC;
return -1;
}
data = CONST_PTR_OFFSET(data, ret);
size -= ret;
offset += ret;
}
return 0;
}
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