mirrors/Astral
1
0
Fork 0
mirror of https://github.com/Mathewnd/Astral.git synced 2026-10-30 05:58:22 +00:00
Code Issues Packages Projects Releases Wiki Activity

kernel: usercopy functions

Browse Source
This commit is contained in:
Matheus
2024-06-09 19:31:26 -03:00
parent 429f56aced
commit 50b4b45d00
53 changed files with 712 additions and 260 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel-src/sys/syscalls/chroot.c
+14 -6
View File
@@ -4,19 +4,27 @@
#include <kernel/alloc.h>
#include <errno.h>
syscallret_t syscall_chroot(context_t *, const char *upath) {
syscallret_t syscall_chroot(context_t *, char *upath) {
syscallret_t ret = {
.ret = -1
};
if (upath > (char *)USERSPACE_END) {
ret.errno = EFAULT;
size_t pathlen;
ret.errno = usercopy_strlen(upath, &pathlen);
if (ret.errno)
return ret;
char *path = alloc(pathlen + 1);
if (path == NULL) {
ret.errno = ENOMEM;
return ret;
}
// TODO safe string ops
char *path = alloc(strlen(upath) + 1);
strcpy(path, upath);
ret.errno = usercopy_fromuser(path, upath, pathlen);
if (ret.errno) {
free(path);
return ret;
}
vnode_t *ref = path[0] == '/' ? sched_getroot() : sched_getcwd();
vnode_t *new = NULL;