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vfs: redo locking

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Matheus
2024-08-26 21:47:23 -03:00
parent da150523ba
commit 42bda0bf92
32 changed files with 271 additions and 169 deletions
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kernel-src/sys/syscalls/chmod.c
+6
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@@ -5,6 +5,7 @@
#include <arch/cpu.h>
#include <kernel/auth.h>
// node expected to be locked
static int dochmod(vnode_t *node, mode_t mode) {
vattr_t attr;
cred_t *cred = &_cpu()->thread->proc->cred;
@@ -58,6 +59,9 @@ syscallret_t syscall_fchmodat(context_t *, int dirfd, char *upath, mode_t mode,
ret.errno = dochmod(node, mode);
ret.ret = ret.errno ? -1 : 0;
// locked by vfs_lookup
VOP_UNLOCK(node);
cleanup:
if (node)
@@ -82,8 +86,10 @@ syscallret_t syscall_fchmod(context_t *, int fd, mode_t mode) {
return ret;
}
VOP_LOCK(file->vnode);
ret.errno = dochmod(file->vnode, mode);
ret.ret = ret.errno ? -1 : 0;
VOP_UNLOCK(file->vnode);
fd_release(file);