RepoMirrors
/
musl
mirror of git://git.musl-libc.org/musl
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

fix fd leak on races and cancellation in ctermid

This commit is contained in:
Rich Felker 2013-07-09 00:42:09 -04:00
parent 0716b10ac8
commit cdf0f53f8b
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/unistd/ctermid.c
View File

@ -4,6 +4,7 @@
#include <fcntl.h>
#include <unistd.h>
#include <limits.h>
#include "syscall.h"
char *ctermid(char *s)
{
@ -13,11 +14,11 @@ char *ctermid(char *s)
if (!s2) s2 = malloc(L_ctermid);
s = s2;
}
fd = open("/dev/tty", O_WRONLY | O_NOCTTY);
fd = open("/dev/tty", O_WRONLY | O_NOCTTY | O_CLOEXEC);
if (fd < 0)
return strcpy(s, "");
if (ttyname_r(fd, s, L_ctermid))
strcpy(s, "");
close(fd);
__syscall(SYS_close, fd);
return s;
}