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kernel: usercopy functions

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Matheus
2024-06-09 19:31:26 -03:00
parent 429f56aced
commit 50b4b45d00
53 changed files with 712 additions and 260 deletions
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kernel-src/sys/syscalls/chmod.c
+12 -3
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@@ -16,18 +16,27 @@ static int dochmod(vnode_t *node, mode_t mode) {
return VOP_SETATTR(node, &attr, V_ATTR_MODE, cred);
}
syscallret_t syscall_fchmodat(context_t *, int dirfd, const char *upath, mode_t mode, int flags) {
syscallret_t syscall_fchmodat(context_t *, int dirfd, char *upath, mode_t mode, int flags) {
syscallret_t ret = {
.ret = -1
};
char *path = alloc(strlen(upath) + 1);
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;
}
strcpy(path, upath);
ret.errno = usercopy_fromuser(path, upath, pathlen);
if (ret.errno) {
free(path);
return ret;
}
file_t *file = NULL;
vnode_t *dirnode = NULL;