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getservbyport_r: fix wrong result if getnameinfo fails with EAI_OVERFLOW
[musl]
/
src
/
legacy
/
cuserid.c
diff --git
a/src/legacy/cuserid.c
b/src/legacy/cuserid.c
index
07866ac
..
dcaf73d
100644
(file)
--- a/
src/legacy/cuserid.c
+++ b/
src/legacy/cuserid.c
@@
-9,12
+9,13
@@
char *cuserid(char *buf)
static char usridbuf[L_cuserid];
struct passwd pw, *ppw;
long pwb[256];
static char usridbuf[L_cuserid];
struct passwd pw, *ppw;
long pwb[256];
+ if (buf) *buf = 0;
getpwuid_r(geteuid(), &pw, (void *)pwb, sizeof pwb, &ppw);
if (!ppw)
getpwuid_r(geteuid(), &pw, (void *)pwb, sizeof pwb, &ppw);
if (!ppw)
- return
0
;
+ return
buf
;
size_t len = strnlen(pw.pw_name, L_cuserid);
if (len == L_cuserid)
size_t len = strnlen(pw.pw_name, L_cuserid);
if (len == L_cuserid)
- return
0
;
+ return
buf
;
if (!buf) buf = usridbuf;
memcpy(buf, pw.pw_name, len+1);
return buf;
if (!buf) buf = usridbuf;
memcpy(buf, pw.pw_name, len+1);
return buf;