#include "pwf.h"
+#include <pthread.h>
-struct group *__getgrent_a(FILE *f, struct group *gr, char **line, size_t *size, char ***mem, size_t *nmem)
+static unsigned atou(char **s)
+{
+ unsigned x;
+ for (x=0; **s-'0'<10U; ++*s) x=10*x+(**s-'0');
+ return x;
+}
+
+int __getgrent_a(FILE *f, struct group *gr, char **line, size_t *size, char ***mem, size_t *nmem, struct group **res)
{
ssize_t l;
char *s, *mems;
size_t i;
-
+ int rv = 0;
+ int cs;
+ pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
for (;;) {
if ((l=getline(line, size, f)) < 0) {
+ rv = ferror(f) ? errno : 0;
free(*line);
*line = 0;
- return 0;
+ gr = 0;
+ goto end;
}
line[0][l-1] = 0;
*s++ = 0; gr->gr_passwd = s;
if (!(s = strchr(s, ':'))) continue;
- *s++ = 0; gr->gr_gid = atoi(s);
- if (!(s = strchr(s, ':'))) continue;
+ *s++ = 0; gr->gr_gid = atou(&s);
+ if (*s != ':') continue;
*s++ = 0; mems = s;
break;
free(*mem);
*mem = calloc(sizeof(char *), *nmem+1);
if (!*mem) {
+ rv = errno;
free(*line);
*line = 0;
- return 0;
+ gr = 0;
+ goto end;
+ }
+ if (*mems) {
+ mem[0][0] = mems;
+ for (s=mems, i=0; *s; s++)
+ if (*s==',') *s++ = 0, mem[0][++i] = s;
+ mem[0][++i] = 0;
+ } else {
+ mem[0][0] = 0;
}
- mem[0][0] = mems;
- for (s=mems, i=0; *s; s++)
- if (*s==',') *s++ = 0, mem[0][++i] = s;
- mem[0][++i] = 0;
gr->gr_mem = *mem;
- return gr;
+end:
+ pthread_setcancelstate(cs, 0);
+ *res = gr;
+ if(rv) errno = rv;
+ return rv;
}