4 files changed, 19 insertions, 1 deletions
diff --git a/src/libc/include/sys/stat.h b/src/libc/include/sys/stat.h
index 343db55..b9d0e8b 100644
--- a/src/libc/include/sys/stat.h
+++ b/src/libc/include/sys/stat.h
@@ -38,6 +38,8 @@ struct stat {
 #define S_ISGID 02000
 #define S_ISVTX 01000
 
+#define S_IRUSR 0x400
+
 /* inode(7) */
 #define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
 #define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
@@ -54,7 +56,7 @@ int mkdir(const char *path, mode_t mode);
 
 static inline mode_t umask(mode_t mask) {
 	(void)mask;
-	__libc_panic("unimplemented");
+	return 0;
 }
 
 static inline int chmod(const char *path, mode_t mode) {
@@ -63,6 +65,12 @@ static inline int chmod(const char *path, mode_t mode) {
 	return -1;
 }
 
+static inline int fchmod(int fd, mode_t mode) {
+	(void)fd; (void)mode;
+	errno = ENOSYS;
+	return -1;
+}
+
 static inline int mknod(const char *path, mode_t mode, dev_t dev) {
 	(void)path; (void)mode; (void)dev;
 	errno = ENOSYS;
diff --git a/src/libc/include/sys/time.h b/src/libc/include/sys/time.h
index e69de29..54df6b3 100644
--- a/src/libc/include/sys/time.h
+++ b/src/libc/include/sys/time.h
@@ -0,0 +1,8 @@
+#pragma once
+#include <errno.h>
+#include <sys/types.h>
+
+struct timeval {
+	time_t tv_sec;
+	suseconds_t tv_usec;
+};
diff --git a/src/libc/include/sys/types.h b/src/libc/include/sys/types.h
index faf656a..2e7f54b 100644
--- a/src/libc/include/sys/types.h
+++ b/src/libc/include/sys/types.h
@@ -4,6 +4,7 @@
 
 typedef long long off_t;
 typedef int64_t time_t;
+typedef int64_t suseconds_t;
 typedef uint64_t clock_t;
 typedef int mode_t;
 
diff --git a/src/libc/include/sys/wait.h b/src/libc/include/sys/wait.h
index cff407e..5f0d2cc 100644
--- a/src/libc/include/sys/wait.h
+++ b/src/libc/include/sys/wait.h
@@ -10,4 +10,5 @@
 #define WNOHANG 0
 #define WUNTRACED 0
 
+pid_t wait(int *wstatus);
 pid_t wait3(int *wstatus, int opts, struct rusage *rusage);