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| | #include "pwf.h"
#include <pthread.h>
#define FIX(x) (pw->pw_##x = pw->pw_##x-line+buf)
static int getpw_r(const char *name, uid_t uid, struct passwd *pw, char *buf, size_t size, struct passwd **res)
{
FILE *f;
char *line = 0;
size_t len = 0;
int rv = 0;
int cs;
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
f = fopen("/etc/passwd", "rbe");
if (!f) {
rv = errno;
goto done;
}
*res = 0;
while (__getpwent_a(f, pw, &line, &len)) {
if (name && !strcmp(name, pw->pw_name)
|| !name && pw->pw_uid == uid) {
if (size < len) {
rv = ERANGE;
break;
}
*res = pw;
memcpy(buf, line, len);
FIX(name);
FIX(passwd);
FIX(gecos);
FIX(dir);
FIX(shell);
break;
}
}
free(line);
fclose(f);
done:
pthread_setcancelstate(cs, 0);
return rv;
}
int getpwnam_r(const char *name, struct passwd *pw, char *buf, size_t size, struct passwd **res)
{
return getpw_r(name, 0, pw, buf, size, res);
}
int getpwuid_r(uid_t uid, struct passwd *pw, char *buf, size_t size, struct passwd **res)
{
return getpw_r(0, uid, pw, buf, size, res);
}
|