// this and can specify len_out as NULL.
PUBLIC_CONST JH_SLURP_NO_STAT 1
PUBLIC_CONST JH_SLURP_REALLOC 2 /* realloc result block if it saves RAM */
+PUBLIC_CONST JH_SLURP_8BYTE_PAD 4 /* pad buffer with eight nullbytes, not one */
PUBLIC_FN char *slurp_fd(int fd, size_t *len_out, int flags) {
int errno_;
size_t size_guess = 1023;
bool trusted_guess = false; /* can we rely on the guess? */
+ int padlen = (flags&JH_SLURP_8BYTE_PAD)?8:1;
+
// If we can determine the exact size, we don't have to guess. So try
// to determine the exact size.
if (!(flags&JH_SLURP_NO_STAT)) {
int done = 0;
while (1) {
- buf = realloc(buf, size_guess+1);
+ buf = realloc(buf, size_guess+padlen);
if (buf == NULL) return NULL;
int last_res;
ssize_t read_res = read_nointr(fd, buf+done, size_guess-done, &last_res);
done += read_res;
if (last_res == 0 || trusted_guess) {
// out
- buf[done] = '\0';
+ if (padlen == 1) {
+ buf[done] = '\0';
+ } else {
+ *(uint64_t*)(buf+done) = 0;
+ }
if (done != size_guess && (flags&JH_SLURP_REALLOC)) {
// Well, it'd be weird if shrinking could fail... but meh, I can't find
// an explicit statement about this being disallowed, so try staying on
// the safe side.
- char *buf_ = realloc(buf, done+1);
+ char *buf_ = realloc(buf, done+padlen);
if (buf_) buf = buf_;
}
if (len_out) *len_out = done;
PUBLIC_FN int write_file(char *path, char *buf, ssize_t len, int open_flags) {
if (len == -1) len = strlen(buf);
- int fd = open(path, open_flags|O_CLOEXEC, 0777);
+ int fd = open(path, open_flags|O_CLOEXEC|O_WRONLY, 0777);
if (fd == -1) return 1;
ssize_t write_res = write_nointr(fd, buf, len, NULL);
int write_errno = errno;