Small utility collection for dealing with file archives that have dependencies
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pkg-utils/lib/util/read_retry.c

27 lines
417 B

/* SPDX-License-Identifier: ISC */
#include <unistd.h>
#include <errno.h>
#include "util/util.h"
ssize_t read_retry(int fd, void *buffer, size_t size)
{
ssize_t ret, total = 0;
while (size > 0) {
ret = read(fd, buffer, size);
if (ret < 0) {
if (errno == EINTR)
continue;
return -1;
}
if (ret == 0)
break;
total += ret;
size -= ret;
buffer = (char *)buffer + ret;
}
return total;
}