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create and mkdir funcs

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file and directory creation functions for both the vfs and tmpfs
This commit is contained in:
Matheus
2022-08-03 22:05:11 -03:00
parent 2419b2e9e0
commit 6ae75a9e99
4 changed files with 124 additions and 22 deletions
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src/fs/vfs.c
+67 -16
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@@ -14,6 +14,50 @@ static inline dirnode_t* mountpoint(dirnode_t* node){
return ret;
}
int vfs_create(dirnode_t* ref, char* path, mode_t mode){
dirnode_t* parent = NULL;
dirnode_t* buff = NULL;
char name[512];
int result = vfs_resolvepath(&buff, &parent, ref, path, name);
if(!parent)
return result;
if(buff)
return EEXIST;
result = parent->vnode.fs->calls->create(parent, name, NULL);
if(result) return result;
return 0;
}
int vfs_mkdir(dirnode_t* ref, char* path, mode_t mode){
dirnode_t* parent = NULL;
dirnode_t* buff = NULL;
char name[512];
int result = vfs_resolvepath(&buff, &parent, ref, path, name);
if(!parent)
return result;
if(buff)
return EEXIST;
result = parent->vnode.fs->calls->mkdir(parent, name, NULL);
if(result) return result;
return 0;
}
int vfs_mount(dirnode_t* ref, char* device, char* mountpoint, char* fs, int mountflags, void* fsinfo){
fscalls_t* fscalls = hashtable_get(&fsfuncs, fs);
@@ -23,11 +67,12 @@ int vfs_mount(dirnode_t* ref, char* device, char* mountpoint, char* fs, int moun
vnode_t* dev = NULL;
dirnode_t* mountdir = ref;
dirnode_t* parent;
if(device){
dev = ref;
if(*device){
int result = vfs_resolvepath(&dev, ref, device);
int result = vfs_resolvepath(&dev, &parent, ref, device, NULL);
if(result)
return result;
@@ -35,7 +80,7 @@ int vfs_mount(dirnode_t* ref, char* device, char* mountpoint, char* fs, int moun
}
int result = vfs_resolvepath(&mountdir, ref, mountpoint);
int result = vfs_resolvepath(&mountdir, &parent, ref, mountpoint, NULL);
if(result)
return result;
@@ -43,16 +88,9 @@ int vfs_mount(dirnode_t* ref, char* device, char* mountpoint, char* fs, int moun
if(GETTYPE(mountdir->vnode.st.st_mode) != TYPE_DIR)
return ENOTDIR;
dirnode_t* mount;
result = fscalls->mount(&mount, dev, mountflags, fsinfo);
result = fscalls->mount(mountdir, dev, mountflags, fsinfo);
if(result)
return result;
mountdir->mount = mount;
return 0;
return result;
}
vnode_t* vfs_newnode(char* name, fs_t* fs, void* fsdata){
@@ -100,7 +138,7 @@ dirnode_t* vfs_newdirnode(char* name, fs_t* fs, void* fsdata){
}
int vfs_resolvepath(vnode_t** result, dirnode_t* ref, char *path){
int vfs_resolvepath(vnode_t** result, dirnode_t** resultparent, dirnode_t* ref, char *path, char* namebuff){
dirnode_t* iterator = ref;
char name[512];
@@ -114,10 +152,13 @@ int vfs_resolvepath(vnode_t** result, dirnode_t* ref, char *path){
size_t offset = 0;
while(path[nameoffset] == '/')
++nameoffset;
while(path[nameoffset] && path[nameoffset] != '/')
name[offset++] = path[nameoffset++];
if(path[nameoffset] == '/')
while(path[nameoffset] == '/')
++nameoffset;
name[offset] = 0;
@@ -132,14 +173,20 @@ int vfs_resolvepath(vnode_t** result, dirnode_t* ref, char *path){
iterator = mountpoint(iterator);
// now try to get the right child
vnode_t* child = hashtable_get(&iterator->children, name);
if(!child){
// open it
int status = iterator->vnode.fs->calls->open(iterator, name);
if(status)
if(status){
if(!path[nameoffset]){
if(namebuff)
strcpy(namebuff, name);
*resultparent = iterator;
}
return status;
}
child = hashtable_get(&iterator->children, name);
@@ -148,7 +195,11 @@ int vfs_resolvepath(vnode_t** result, dirnode_t* ref, char *path){
iterator = (dirnode_t*)child;
}
if(namebuff)
strcpy(namebuff, name);
*resultparent = iterator->vnode.parent;
*result = (vnode_t*)iterator;
return 0;