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auth: initial implementation + some filesystem checks

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Matheus
2024-08-24 20:00:46 -03:00
parent dd70116695
commit 4d51507953
19 changed files with 251 additions and 34 deletions
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kernel-src/fs/vfs.c
+7 -6
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@@ -10,6 +10,7 @@
#include <kernel/vmmcache.h>
#include <kernel/block.h>
#include <kernel/pipefs.h>
#include <kernel/auth.h>
#define PATHNAME_MAX 512
#define MAXLINKDEPTH 64
@@ -20,14 +21,9 @@ vnode_t *vfsroot;
static spinlock_t listlock;
static vfs_t *vfslist;
static cred_t kernelcred = {
.gid = 0,
.uid = 0
};
static cred_t *getcred() {
if (_cpu()->thread == NULL || _cpu()->thread->proc == NULL)
return &kernelcred;
return NULL;
else
return &_cpu()->thread->proc->cred;
}
@@ -111,6 +107,10 @@ int vfs_open(vnode_t *ref, char *path, int flags, vnode_t **res) {
if (err)
return err;
err = VOP_ACCESS(tmp, ((flags & V_FFLAGS_READ) ? V_ACCESS_READ : 0) | ((flags & V_FFLAGS_WRITE) ? V_ACCESS_WRITE : 0), getcred());
if (err)
return err;
err = VOP_OPEN(&tmp, flags, getcred());
if (err) {
VOP_RELEASE(tmp);
@@ -189,6 +189,7 @@ int vfs_write(vnode_t *node, void *buffer, size_t size, uintmax_t offset, size_t
}
MUTEX_ACQUIRE(&node->sizelock, false);
vattr_t attr;
err = VOP_GETATTR(node, &attr, getcred());
if (err)