KVFS improvements
This commit is contained in:
@ -5,5 +5,6 @@
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#define E_NOMEMORY -1
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#define E_UNKNOWN_FSTYPE -2
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#define E_NOENTRY -3
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#define E_OUTOFBOUNDS -4
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#endif // ERRORS_H_
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@ -10,7 +10,7 @@
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#include "dlmalloc/malloc.h"
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#include "util/util.h"
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int32_t kvfs_read(struct VfsMountPoint *vmp, const char *key, uint8_t *const buffer, size_t n) {
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int32_t kvfs_read(struct VfsMountPoint *vmp, const char *key, uint8_t *const buffer, size_t n, size_t off) {
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KvfsNode *node = NULL;
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spinlock_acquire(&vmp->spinlock);
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@ -22,12 +22,12 @@ int32_t kvfs_read(struct VfsMountPoint *vmp, const char *key, uint8_t *const buf
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}
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spinlock_acquire(&node->spinlock);
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hal_memcpy(buffer, node->buffer, MIN(n, KVFS_BUFFER_SIZE));
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hal_memcpy(buffer + off, node->buffer, MIN(n, KVFS_BUFFER_SIZE - off));
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spinlock_release(&node->spinlock);
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return E_OK;
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}
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int32_t kvfs_write(struct VfsMountPoint *vmp, const char *key, const uint8_t *const buffer, size_t n) {
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int32_t kvfs_write(struct VfsMountPoint *vmp, const char *key, const uint8_t *const buffer, size_t n, size_t off) {
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KvfsNode *node = NULL;
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spinlock_acquire(&vmp->spinlock);
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@ -42,13 +42,15 @@ int32_t kvfs_write(struct VfsMountPoint *vmp, const char *key, const uint8_t *co
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spinlock_release(&vmp->spinlock);
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spinlock_acquire(&node->spinlock);
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if (node->buffer == NULL) {
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node->buffer = dlmalloc(KVFS_BUFFER_SIZE);
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if (node->buffer == NULL) {
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spinlock_release(&node->spinlock);
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return E_NOMEMORY;
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}
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}
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hal_memcpy(node->buffer, buffer, MIN(n, KVFS_BUFFER_SIZE));
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hal_memcpy(node->buffer + off, buffer, MIN(n, KVFS_BUFFER_SIZE - off));
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spinlock_release(&node->spinlock);
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return E_OK;
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}
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@ -65,26 +67,41 @@ int32_t kvfs_remove(struct VfsMountPoint *vmp, const char *key) {
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}
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spinlock_acquire(&node->spinlock);
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if (node->buffer != NULL) {
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dlfree(node->buffer);
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}
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hal_memset(node, 0, sizeof(*node));
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spinlock_release(&node->spinlock);
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return E_OK;
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}
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int32_t kvfs_cleanup(struct VfsMountPoint *vmp) {
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for (size_t i = 0; i < KVFS_NODES_MAX; i++) {
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KvfsNode *node = &vmp->fs.kvfs.nodes[i];
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spinlock_acquire(&node->spinlock);
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if (node->buffer != NULL) {
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dlfree(node->buffer);
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}
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spinlock_release(&node->spinlock);
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}
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return E_OK;
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}
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bool kvfs_check(void) {
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int32_t ret;
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char *hello = "WAWAWAWA!!!";
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ret = vfs_write("+tmpvars", "hello", hello, hal_strlen(hello)+1);
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ret = vfs_write("tmpvars", "hello", hello, hal_strlen(hello)+1, 0);
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if (ret != E_OK) return false;
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char buf[20];
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ret = vfs_read("+tmpvars", "hello", buf, sizeof(buf));
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ret = vfs_read("tmpvars", "hello", buf, sizeof(buf), 0);
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if (ret != E_OK) return false;
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vfs_remove("+tmpvars", "hello");
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vfs_remove("tmpvars", "hello");
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if (ret != E_OK) return false;
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ret = vfs_read("+tmpvars", "hello", buf, sizeof(buf));
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ret = vfs_read("tmpvars", "hello", buf, sizeof(buf), 0);
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if (ret != E_NOENTRY) return false;
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return true;
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@ -20,9 +20,10 @@ typedef struct {
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KvfsNode nodes[KVFS_NODES_MAX];
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} Kvfs;
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int32_t kvfs_read(struct VfsMountPoint *vmp, const char *key, uint8_t *const buffer, size_t n);
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int32_t kvfs_write(struct VfsMountPoint *vmp, const char *key, const uint8_t *const buffer, size_t n);
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int32_t kvfs_read(struct VfsMountPoint *vmp, const char *key, uint8_t *const buffer, size_t n, size_t off);
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int32_t kvfs_write(struct VfsMountPoint *vmp, const char *key, const uint8_t *const buffer, size_t n, size_t off);
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int32_t kvfs_remove(struct VfsMountPoint *vmp, const char *key);
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int32_t kvfs_cleanup(struct VfsMountPoint *vmp);
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bool kvfs_check(void);
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#endif // FS_KVFS_KVFS_H_
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@ -14,7 +14,7 @@ VfsTable VFS_TABLE;
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static const char *vfs_strings[] = {
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[VFS_FATFS] = "FAT",
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[VFS_KVFS] = "Kvfs",
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[VFS_KVFS] = "KVFS",
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};
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void vfs_init_kvfs(VfsMountPoint *mp) {
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@ -22,6 +22,7 @@ void vfs_init_kvfs(VfsMountPoint *mp) {
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mp->write = &kvfs_write;
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mp->remove = &kvfs_remove;
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mp->check = &kvfs_check;
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mp->cleanup = &kvfs_cleanup;
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}
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int32_t vfs_mount(char *mountpoint, int32_t fstype) {
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@ -48,7 +49,7 @@ int32_t vfs_mount(char *mountpoint, int32_t fstype) {
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return E_OK;
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}
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int32_t vfs_read(char *mountpoint, const char *path, uint8_t *const buffer, size_t n) {
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int32_t vfs_unmount(char *mountpoint) {
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VfsMountPoint *mp = NULL;
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spinlock_acquire(&VFS_TABLE.spinlock);
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@ -59,10 +60,18 @@ int32_t vfs_read(char *mountpoint, const char *path, uint8_t *const buffer, size
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return E_NOENTRY;
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}
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return mp->read(mp, path, buffer, n);
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spinlock_acquire(&mp->spinlock);
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int32_t err = mp->cleanup(mp);
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if (err != E_OK) {
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spinlock_release(&mp->spinlock);
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return err;
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}
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hal_memset(mp, 0, sizeof(*mp));
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spinlock_release(&mp->spinlock);
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return E_OK;
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}
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int32_t vfs_write(char *mountpoint, const char *path, const uint8_t *const buffer, size_t n) {
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int32_t vfs_read(char *mountpoint, const char *path, uint8_t *const buffer, size_t n, size_t off) {
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VfsMountPoint *mp = NULL;
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spinlock_acquire(&VFS_TABLE.spinlock);
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@ -73,7 +82,21 @@ int32_t vfs_write(char *mountpoint, const char *path, const uint8_t *const buffe
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return E_NOENTRY;
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}
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return mp->write(mp, path, buffer, n);
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return mp->read(mp, path, buffer, n, off);
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}
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int32_t vfs_write(char *mountpoint, const char *path, const uint8_t *const buffer, size_t n, size_t off) {
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VfsMountPoint *mp = NULL;
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spinlock_acquire(&VFS_TABLE.spinlock);
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HSHTB_GET(&VFS_TABLE, mountpoints, mountpoint, label, mp);
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spinlock_release(&VFS_TABLE.spinlock);
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if (mp == NULL) {
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return E_NOENTRY;
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}
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return mp->write(mp, path, buffer, n, off);
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}
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int32_t vfs_remove(char *mountpoint, const char *path) {
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@ -94,7 +117,7 @@ void vfs_init(void) {
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hal_memset(&VFS_TABLE, 0, sizeof(VFS_TABLE));
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spinlock_init(&VFS_TABLE.spinlock);
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ASSERT("vfs", vfs_mount("+tmpvars", VFS_KVFS) == E_OK, "could not create +tmpvars mount point\n");
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ASSERT("vfs", vfs_mount("tmpvars", VFS_KVFS) == E_OK, "could not create tmpvars mount point\n");
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LOG("vfs", "init done\n");
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@ -102,7 +125,11 @@ void vfs_init(void) {
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if (!VFS_TABLE.mountpoints[i].taken) continue;
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VfsMountPoint *vmp = &VFS_TABLE.mountpoints[i];
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LOG("vfs", "mount point %s: %s\n", vmp->label, vfs_strings[vmp->fstype]);
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if (vmp->check != NULL) {
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LOG("vfs", "check = %s\n", vmp->check() ? "OK" : "FAIL");
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} else {
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LOG("vfs", "check skipped\n");
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}
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}
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}
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@ -20,9 +20,10 @@ typedef struct VfsMountPoint {
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uint8_t label[VFS_MOUNTPOINT_LABEL_MAX];
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int32_t fstype;
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int32_t (*read)(struct VfsMountPoint *vmp, const char *path, uint8_t *const buffer, size_t n);
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int32_t (*write)(struct VfsMountPoint *vmp, const char *path, const uint8_t *const buffer, size_t n);
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int32_t (*read)(struct VfsMountPoint *vmp, const char *path, uint8_t *const buffer, size_t n, size_t off);
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int32_t (*write)(struct VfsMountPoint *vmp, const char *path, const uint8_t *const buffer, size_t n, size_t off);
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int32_t (*remove)(struct VfsMountPoint *vmp, const char *path);
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int32_t (*cleanup)(struct VfsMountPoint *vmp);
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bool (*check)(void);
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union {
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@ -39,8 +40,9 @@ typedef struct {
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extern VfsTable VFS_TABLE;
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void vfs_init(void);
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int32_t vfs_read(char *mountpoint, const char *path, uint8_t *const buffer, size_t n);
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int32_t vfs_write(char *mountpoint, const char *path, const uint8_t *const buffer, size_t n);
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int32_t vfs_read(char *mountpoint, const char *path, uint8_t *const buffer, size_t n, size_t off);
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int32_t vfs_write(char *mountpoint, const char *path, const uint8_t *const buffer, size_t n, size_t off);
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int32_t vfs_remove(char *mountpoint, const char *path);
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int32_t vfs_unmount(char *mountpoint);
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#endif // VFS_VFS_H_
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