LibC: Implement mkfifoat(2)

Author: implicitfield

Userland/Libraries/LibC/stat.cpp

@@ -81,6 +81,12 @@ int mkfifo(char const* pathname, mode_t mode)
     return mknod(pathname, mode | S_IFIFO, 0);
 }
 
+// https://pubs.opengroup.org/onlinepubs/9699919799/functions/mkfifoat.html
+int mkfifoat(int dirfd, char const* pathname, mode_t mode)
+{
+    return mknodat(dirfd, pathname, mode | S_IFIFO, 0);
+}
+
 static int do_stat(int dirfd, char const* path, struct stat* statbuf, bool follow_symlinks)
 {
     if (!path) {

Userland/Libraries/LibC/sys/stat.h

@@ -20,6 +20,7 @@ int fchmod(int fd, mode_t);
 int mkdir(char const* pathname, mode_t);
 int mkdirat(int dirfd, char const* pathname, mode_t);
 int mkfifo(char const* pathname, mode_t);
+int mkfifoat(int dirfd, char const* pathname, mode_t);
 int fstat(int fd, struct stat* statbuf);
 int lstat(char const* path, struct stat* statbuf);
 int stat(char const* path, struct stat* statbuf);