xref: /aosp_15_r20/external/musl/src/passwd/getpw_r.c (revision c9945492fdd68bbe62686c5b452b4dc1be3f8453)
1*c9945492SAndroid Build Coastguard Worker #include "pwf.h"
2*c9945492SAndroid Build Coastguard Worker #include <pthread.h>
3*c9945492SAndroid Build Coastguard Worker 
4*c9945492SAndroid Build Coastguard Worker #define FIX(x) (pw->pw_##x = pw->pw_##x-line+buf)
5*c9945492SAndroid Build Coastguard Worker 
getpw_r(const char * name,uid_t uid,struct passwd * pw,char * buf,size_t size,struct passwd ** res)6*c9945492SAndroid Build Coastguard Worker static int getpw_r(const char *name, uid_t uid, struct passwd *pw, char *buf, size_t size, struct passwd **res)
7*c9945492SAndroid Build Coastguard Worker {
8*c9945492SAndroid Build Coastguard Worker 	char *line = 0;
9*c9945492SAndroid Build Coastguard Worker 	size_t len = 0;
10*c9945492SAndroid Build Coastguard Worker 	int rv = 0;
11*c9945492SAndroid Build Coastguard Worker 	int cs;
12*c9945492SAndroid Build Coastguard Worker 
13*c9945492SAndroid Build Coastguard Worker 	pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
14*c9945492SAndroid Build Coastguard Worker 
15*c9945492SAndroid Build Coastguard Worker 	rv = __getpw_a(name, uid, pw, &line, &len, res);
16*c9945492SAndroid Build Coastguard Worker 	if (*res && size < len) {
17*c9945492SAndroid Build Coastguard Worker 		*res = 0;
18*c9945492SAndroid Build Coastguard Worker 		rv = ERANGE;
19*c9945492SAndroid Build Coastguard Worker 	}
20*c9945492SAndroid Build Coastguard Worker 	if (*res) {
21*c9945492SAndroid Build Coastguard Worker 		memcpy(buf, line, len);
22*c9945492SAndroid Build Coastguard Worker 		FIX(name);
23*c9945492SAndroid Build Coastguard Worker 		FIX(passwd);
24*c9945492SAndroid Build Coastguard Worker 		FIX(gecos);
25*c9945492SAndroid Build Coastguard Worker 		FIX(dir);
26*c9945492SAndroid Build Coastguard Worker 		FIX(shell);
27*c9945492SAndroid Build Coastguard Worker 	}
28*c9945492SAndroid Build Coastguard Worker  	free(line);
29*c9945492SAndroid Build Coastguard Worker 	pthread_setcancelstate(cs, 0);
30*c9945492SAndroid Build Coastguard Worker 	if (rv) errno = rv;
31*c9945492SAndroid Build Coastguard Worker 	return rv;
32*c9945492SAndroid Build Coastguard Worker }
33*c9945492SAndroid Build Coastguard Worker 
getpwnam_r(const char * name,struct passwd * pw,char * buf,size_t size,struct passwd ** res)34*c9945492SAndroid Build Coastguard Worker int getpwnam_r(const char *name, struct passwd *pw, char *buf, size_t size, struct passwd **res)
35*c9945492SAndroid Build Coastguard Worker {
36*c9945492SAndroid Build Coastguard Worker 	return getpw_r(name, 0, pw, buf, size, res);
37*c9945492SAndroid Build Coastguard Worker }
38*c9945492SAndroid Build Coastguard Worker 
getpwuid_r(uid_t uid,struct passwd * pw,char * buf,size_t size,struct passwd ** res)39*c9945492SAndroid Build Coastguard Worker int getpwuid_r(uid_t uid, struct passwd *pw, char *buf, size_t size, struct passwd **res)
40*c9945492SAndroid Build Coastguard Worker {
41*c9945492SAndroid Build Coastguard Worker 	return getpw_r(0, uid, pw, buf, size, res);
42*c9945492SAndroid Build Coastguard Worker }
43