diff --git a/libc/Makefile b/libc/Makefile
index 5a0df496..fb1616a5 100644
--- a/libc/Makefile
+++ b/libc/Makefile
@@ -116,6 +116,7 @@ HOSTEDOBJS=\
access.o \
chdir.o \
chmod.o \
+chown.o \
clock.o \
close.o \
$(CPUDIR)/fork.o \
diff --git a/libc/chown.cpp b/libc/chown.cpp
new file mode 100644
index 00000000..399d6131
--- /dev/null
+++ b/libc/chown.cpp
@@ -0,0 +1,34 @@
+/*******************************************************************************
+
+ Copyright(C) Jonas 'Sortie' Termansen 2012.
+
+ This file is part of the Sortix C Library.
+
+ The Sortix C Library is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or (at your
+ option) any later version.
+
+ The Sortix C Library is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+ License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with the Sortix C Library. If not, see .
+
+ chown.cpp
+ Changes the owner and group of a file.
+
+*******************************************************************************/
+
+#include
+#include
+#include
+
+DEFN_SYSCALL3(int, sys_chown, SYSCALL_CHOWN, const char*, uid_t, gid_t);
+
+extern "C" int chown(const char* path, uid_t owner, gid_t group)
+{
+ return sys_chown(path, owner, group);
+}
diff --git a/libc/include/unistd.h b/libc/include/unistd.h
index 62f9c55e..3fdb5765 100644
--- a/libc/include/unistd.h
+++ b/libc/include/unistd.h
@@ -88,7 +88,6 @@ extern char** environ;
/* TODO: These are not implemented in sortix libc yet. */
#if defined(__SORTIX_SHOW_UNIMPLEMENTED)
unsigned alarm(unsigned);
-int chown(const char*, uid_t, gid_t);
size_t confstr(int, char*, size_t);
char* crypt(const char*, const char*);
char* ctermid(char*);
@@ -153,6 +152,7 @@ extern int opterr, optind, optopt;
int access(const char*, int);
int chdir(const char*);
+int chown(const char*, uid_t, gid_t);
int close(int);
int dup(int);
void _exit(int) __attribute__ ((noreturn));
diff --git a/sortix/include/sortix/syscallnum.h b/sortix/include/sortix/syscallnum.h
index 827054c4..c6310f05 100644
--- a/sortix/include/sortix/syscallnum.h
+++ b/sortix/include/sortix/syscallnum.h
@@ -79,6 +79,7 @@
#define SYSCALL_DISPMSG_ISSUE 55
#define SYSCALL_FSTATAT 56
#define SYSCALL_CHMOD 57
-#define SYSCALL_MAX_NUM 58 /* index of highest constant + 1 */
+#define SYSCALL_CHOWN 58
+#define SYSCALL_MAX_NUM 59 /* index of highest constant + 1 */
#endif
diff --git a/sortix/io.cpp b/sortix/io.cpp
index d0611da2..0fd4e277 100644
--- a/sortix/io.cpp
+++ b/sortix/io.cpp
@@ -317,6 +317,22 @@ static int sys_chdir(const char* path)
return 0;
}
+static int sys_chown(const char* path, uid_t owner, gid_t group)
+{
+ char* pathcopy = GetStringFromUser(path);
+ if ( !pathcopy )
+ return -1;
+ ioctx_t ctx; SetupUserIOCtx(&ctx);
+ const char* relpath = pathcopy;
+ Ref from = PrepareLookup(&relpath);
+ Ref desc = from->open(&ctx, relpath, O_WRONLY);
+ from.Reset();
+ delete[] pathcopy;
+ if ( !desc )
+ return -1;
+ return desc->chown(&ctx, owner, group);
+}
+
static int sys_chmod(const char* path, mode_t mode)
{
char* pathcopy = GetStringFromUser(path);
@@ -374,6 +390,7 @@ void Init()
Syscall::Register(SYSCALL_ACCESS, (void*) sys_access);
Syscall::Register(SYSCALL_CHDIR, (void*) sys_chdir);
Syscall::Register(SYSCALL_CHMOD, (void*) sys_chmod);
+ Syscall::Register(SYSCALL_CHOWN, (void*) sys_chown);
Syscall::Register(SYSCALL_CLOSE, (void*) sys_close);
Syscall::Register(SYSCALL_DUP, (void*) sys_dup);
Syscall::Register(SYSCALL_FCNTL, (void*) sys_fcntl);