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#include "pwf.h"
#include <pthread.h>
#define FIX(x) (gr->gr_##x = gr->gr_##x-line+buf)
static int getgr_r(const char *name, gid_t gid, struct group *gr, char *buf, size_t size, struct group **res)
{
char *line = 0;
size_t len = 0;
char **mem = 0;
size_t nmem = 0;
int rv = 0;
size_t i;
int cs;
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
rv = __getgr_a(name, gid, gr, &line, &len, &mem, &nmem, res);
if (*res && size < len + (nmem+1)*sizeof(char *) + 32) {
*res = 0;
rv = ERANGE;
}
if (*res) {
buf += (16-(uintptr_t)buf)%16;
gr->gr_mem = (void *)buf;
buf += (nmem+1)*sizeof(char *);
memcpy(buf, line, len);
FIX(name);
FIX(passwd);
for (i=0; mem[i]; i++)
gr->gr_mem[i] = mem[i]-line+buf;
gr->gr_mem[i] = 0;
}
free(mem);
free(line);
pthread_setcancelstate(cs, 0);
if (rv) errno = rv;
return rv;
}
int getgrnam_r(const char *name, struct group *gr, char *buf, size_t size, struct group **res)
{
return getgr_r(name, 0, gr, buf, size, res);
}
int getgrgid_r(gid_t gid, struct group *gr, char *buf, size_t size, struct group **res)
{
return getgr_r(0, gid, gr, buf, size, res);
}
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