syscalls: fchmod

src/arch/x86_64/syscall.asm

@@ -41,7 +41,8 @@ extern syscall_listen
 extern syscall_connect
 extern syscall_accept
 extern syscall_nanosleep
-func_count equ 40
+extern syscall_fchmod
+func_count equ 41
 
 
 func_table:
@@ -85,6 +86,7 @@ func_table:
 	dq syscall_connect
 	dq syscall_accept
 	dq syscall_nanosleep
+	dq syscall_fchmod
 section .text
 global asm_syscall_entry
 

src/sys/syscalls/fchmod.c

@@ -0,0 +1,31 @@
+#include <kernel/syscalls.h>
+#include <kernel/vfs.h>
+#include <sys/types.h>
+#include <arch/cls.h>
+#include <kernel/fd.h>
+#include <kernel/sched.h>
+
+syscallret syscall_fchmod(int ifd, mode_t mode){
+	syscallret retv;
+	retv.ret = -1;	
+
+	proc_t* proc = arch_getcls()->thread->proc;
+
+	fd_t* fd;
+
+	int err = fd_access(&proc->fdtable, &fd, ifd);
+
+	if(err){
+		retv.errno = err;
+		return retv;
+	}
+
+	retv.errno = vfs_chmod(fd->node, mode);
+
+	fd_release(fd);
+
+	retv.ret = retv.errno ? -1 : 0;
+	
+	return retv;
+
+}