errno: add ENOTEMPTY for rmdir()

include/errno.h

@@ -9,22 +9,23 @@ extern "C" {
    threads are supported. */
 extern int errno;
 
-#define EDOM       1   /* Outside of domain of math function. */
-#define EILSEQ     2   /* Illegal multi-byte character sequence. */
-#define ERANGE     3   /* Range error during text-to-numeric conversion. */
-#define EACCES     4   /* File access denied. */
-#define EEXIST     5   /* File already exists. */
-#define EINVAL     6   /* Invalid argument in general; lots of uses. */
-#define ENFILE     7   /* Out of file descriptors. */
-#define ENOENT     8   /* File or folder does not exist. */
-#define ENOMEM     9   /* System ran out of memory (RAM). */
-#define EDQUOT    10   /* Out of inodes or memory space. */
-#define ENOSPC    11   /* No space left on device. */
-#define ENOTSUP   12   /* Operation not supported. */
-#define EBADF     13   /* Invalid file descriptor. */
-#define ESPIPE    14   /* File descriptor is unable to seek. */
-#define EISDIR    15   /* File descriptor is a directory. */
-#define ENOTDIR   16   /* File descriptor is not a directory. */
+#define EDOM          1   /* Outside of domain of math function. */
+#define EILSEQ        2   /* Illegal multi-byte character sequence. */
+#define ERANGE        3   /* Range error during text-to-numeric conversion. */
+#define EACCES        4   /* File access denied. */
+#define EEXIST        5   /* File already exists. */
+#define EINVAL        6   /* Invalid argument in general; lots of uses. */
+#define ENFILE        7   /* Out of file descriptors. */
+#define ENOENT        8   /* File or folder does not exist. */
+#define ENOMEM        9   /* System ran out of memory (RAM). */
+#define EDQUOT       10   /* Out of inodes or memory space. */
+#define ENOSPC       11   /* No space left on device. */
+#define ENOTSUP      12   /* Operation not supported. */
+#define EBADF        13   /* Invalid file descriptor. */
+#define ESPIPE       14   /* File descriptor is unable to seek. */
+#define EISDIR       15   /* File descriptor is a directory. */
+#define ENOTDIR      16   /* File descriptor is not a directory. */
+#define ENOTEMPTY    17   /* Directory is not empty. */
 
 #ifdef __cplusplus
 }

src/libc/string/strerror.c

@@ -2,23 +2,24 @@
 #include <errno.h>
 
 static char *errno_strings [] = {
-	[0]        = "Success",
-	[EDOM]     = "Numerical argument out of domain",
-	[EILSEQ]   = "Invalid or incomplete multibyte or wide character",
-	[ERANGE]   = "Numerical result out of range",
-	[EACCES]   = "Permission denied",
-	[EEXIST]   = "File exists",
-	[EINVAL]   = "Invalid argument",
-	[ENFILE]   = "Too many open files in system",
-	[ENOENT]   = "No such file or directory",
-	[ENOMEM]   = "Cannot allocate memory",
-	[EDQUOT]   = "Disk quota exceeded",
-	[ENOSPC]   = "No space left on device",
-	[ENOTSUP]  = "Operation not supported",
-	[EBADF]    = "Bad file descriptor",
-	[ESPIPE]   = "Illegal seek",
-	[EISDIR]   = "Is a directory",
-	[ENOTDIR]  = "Not a directory",
+	[0]           = "Success",
+	[EDOM]        = "Numerical argument out of domain",
+	[EILSEQ]      = "Invalid or incomplete multibyte or wide character",
+	[ERANGE]      = "Numerical result out of range",
+	[EACCES]      = "Permission denied",
+	[EEXIST]      = "File exists",
+	[EINVAL]      = "Invalid argument",
+	[ENFILE]      = "Too many open files in system",
+	[ENOENT]      = "No such file or directory",
+	[ENOMEM]      = "Cannot allocate memory",
+	[EDQUOT]      = "Disk quota exceeded",
+	[ENOSPC]      = "No space left on device",
+	[ENOTSUP]     = "Operation not supported",
+	[EBADF]       = "Bad file descriptor",
+	[ESPIPE]      = "Illegal seek",
+	[EISDIR]      = "Is a directory",
+	[ENOTDIR]     = "Not a directory",
+	[ENOTEMPTY]   = "Directory not empty",
 };
 
 char *strerror(int e)