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vfs: VOP_RESIZE

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Matheus
2023-07-09 20:33:22 -03:00
parent b1ac2fb0fe
commit 7a0bd0747e
5 changed files with 25 additions and 5 deletions
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kernel-src/fs/tmpfs.c
+13 -3
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@@ -32,7 +32,7 @@ static int tmpfs_mount(vfs_t **vfs, vnode_t *mountpoint, vnode_t *backing, void
#define DATAMMUFLAGS (ARCH_MMU_FLAGS_WRITE | ARCH_MMU_FLAGS_READ | ARCH_MMU_FLAGS_NOEXEC)
// expects to be called with node locked
static int tmpfs_resize(tmpfsnode_t *node, size_t size) {
static int resize(tmpfsnode_t *node, size_t size) {
if (size == node->attr.size || node->vnode.type != V_TYPE_REGULAR)
return 0;
@@ -264,7 +264,7 @@ static int tmpfs_write(vnode_t *node, void *buffer, size_t size, uintmax_t offse
VOP_LOCK(node);
if (top > tmpnode->attr.size) {
int err = tmpfs_resize(tmpnode, top);
int err = resize(tmpnode, top);
if (err) {
VOP_UNLOCK(node);
return err;
@@ -468,6 +468,15 @@ static int tmpfs_inactive(vnode_t *node) {
return 0;
}
static int tmpfs_resize(vnode_t *node, size_t size, cred_t *) {
VOP_LOCK(node);
int err = resize((tmpfsnode_t *)node, size);
VOP_UNLOCK(node);
return err;
}
static vfsops_t vfsops = {
.mount = tmpfs_mount,
.root = tmpfs_root
@@ -491,7 +500,8 @@ static vops_t vnops = {
.inactive = tmpfs_inactive,
.mmap = tmpfs_mmap,
.munmap = tmpfs_munmap,
.getdents = tmpfs_getdents
.getdents = tmpfs_getdents,
.resize = tmpfs_resize
};
static tmpfsnode_t *newnode(vfs_t *vfs, int type) {