int sgetspent_r (const char *string, struct spwd *spwd,
char *buff, size_t buflen, struct spwd **result)
{
int ret;
*result = NULL;
ret = __sgetspent_r(string, spwd, buff, buflen);
*result = spwd;
return ret;
}
/* Read one shadow entry from the given stream. */
struct spwd *
sgetspent (const char *string)
{
static char *buffer;
static size_t buffer_size;
static struct spwd resbuf;
struct spwd *result;
int save, save_errno;
/* Get lock. */
__libc_lock_lock (lock);
/* Allocate buffer if not yet available. */
if (buffer == NULL)
{
buffer_size = BUFLEN_SPWD;
buffer = malloc (buffer_size);
}
/* We don't want to pass errno == 0 or errno == ERANGE back */
save_errno = errno;
while (buffer != NULL
&& __sgetspent_r (string, &resbuf, buffer, buffer_size, &result) != 0
&& errno == ERANGE)
{
char *new_buf;
buffer_size += BUFLEN_SPWD;
__set_errno (0);
new_buf = realloc (buffer, buffer_size);
if (new_buf == NULL)
{
/* We are out of memory. Free the current buffer so that the
process gets a chance for a normal termination. */
save = errno;
free (buffer);
__set_errno (save);
}
buffer = new_buf;
}
if (errno == 0)
__set_errno (save_errno);
if (buffer == NULL)
result = NULL;
/* Release lock. Preserve error value. */
save = errno;
__libc_lock_unlock (lock);
__set_errno (save);
return result;
}
