nsz Git - musl/blob - src/passwd/getpwent_a.c

   1 #include "pwf.h"
   2 #include <pthread.h>
   3
   4 static unsigned atou(char **s)
   5 {
   6         unsigned x;
   7         for (x=0; **s-'0'<10U; ++*s) x=10*x+(**s-'0');
   8         return x;
   9 }
  10
  11 struct passwd *__getpwent_a(FILE *f, struct passwd *pw, char **line, size_t *size)
  12 {
  13         ssize_t l;
  14         char *s;
  15         int cs;
  16         pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
  17         for (;;) {
  18                 if ((l=getline(line, size, f)) < 0) {
  19                         free(*line);
  20                         *line = 0;
  21                         pw = 0;
  22                         break;
  23                 }
  24                 line[0][l-1] = 0;
  25
  26                 s = line[0];
  27                 pw->pw_name = s++;
  28                 if (!(s = strchr(s, ':'))) continue;
  29
  30                 *s++ = 0; pw->pw_passwd = s;
  31                 if (!(s = strchr(s, ':'))) continue;
  32
  33                 *s++ = 0; pw->pw_uid = atou(&s);
  34                 if (*s != ':') continue;
  35
  36                 *s++ = 0; pw->pw_gid = atou(&s);
  37                 if (*s != ':') continue;
  38
  39                 *s++ = 0; pw->pw_gecos = s;
  40                 if (!(s = strchr(s, ':'))) continue;
  41
  42                 *s++ = 0; pw->pw_dir = s;
  43                 if (!(s = strchr(s, ':'))) continue;
  44
  45                 *s++ = 0; pw->pw_shell = s;
  46                 break;
  47         }
  48         pthread_setcancelstate(cs, 0);
  49         return pw;
  50 }