X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;ds=sidebyside;f=src%2Funistd%2Ffaccessat.c;h=557503eb6d8160fe9dc76fe8ee52083fedaa180c;hb=775bde6b5c04ecc689ecbb4a25ceaf2ed6ab60c8;hp=1083467f8e442b90dd38002d602cbb1ee7d73f2e;hpb=516358561efbc5754d0ad43a52483e0a839d6bd3;p=musl

diff --git a/src/unistd/faccessat.c b/src/unistd/faccessat.c
index 1083467f..557503eb 100644
--- a/src/unistd/faccessat.c
+++ b/src/unistd/faccessat.c
@@ -1,5 +1,6 @@
 #include <unistd.h>
 #include <fcntl.h>
+#include <sys/wait.h>
 #include "syscall.h"
 #include "pthread_impl.h"
 
@@ -24,27 +25,35 @@ static int checker(void *p)
 
 int faccessat(int fd, const char *filename, int amode, int flag)
 {
-	if (!flag || (flag==AT_EACCESS && getuid()==geteuid() && getgid()==getegid()))
-		return syscall(SYS_faccessat, fd, filename, amode, flag);
+	if (flag) {
+		int ret = __syscall(SYS_faccessat2, fd, filename, amode, flag);
+		if (ret != -ENOSYS) return __syscall_ret(ret);
+	}
 
-	if (flag != AT_EACCESS)
+	if (flag & ~AT_EACCESS)
 		return __syscall_ret(-EINVAL);
 
+	if (!flag || (getuid()==geteuid() && getgid()==getegid()))
+		return syscall(SYS_faccessat, fd, filename, amode);
+
 	char stack[1024];
 	sigset_t set;
+	pid_t pid;
+	int status;
 	int ret, p[2];
 
-	if (pipe(p)) return __syscall_ret(-EBUSY);
+	if (pipe2(p, O_CLOEXEC)) return __syscall_ret(-EBUSY);
 	struct ctx c = { .fd = fd, .filename = filename, .amode = amode, .p = p[1] };
 
 	__block_all_sigs(&set);
 	
-	ret = __clone(checker, stack+sizeof stack, 0, &c);
+	pid = __clone(checker, stack+sizeof stack, 0, &c);
 	__syscall(SYS_close, p[1]);
 
-	if (ret<0 || __syscall(SYS_read, p[0], &ret, sizeof ret) != sizeof(ret))
+	if (pid<0 || __syscall(SYS_read, p[0], &ret, sizeof ret) != sizeof(ret))
 		ret = -EBUSY;
 	__syscall(SYS_close, p[0]);
+	__syscall(SYS_wait4, pid, &status, __WCLONE, 0);
 
 	__restore_sigs(&set);