[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/e2fsprogs/e2fsprogs-1.42.9/lib/quota/mkquota.c b/ap/app/e2fsprogs/e2fsprogs-1.42.9/lib/quota/mkquota.c
new file mode 100644
index 0000000..3aa8100
--- /dev/null
+++ b/ap/app/e2fsprogs/e2fsprogs-1.42.9/lib/quota/mkquota.c
@@ -0,0 +1,561 @@
+/*
+ * mkquota.c --- create quota files for a filesystem
+ *
+ * Aditya Kali <adityakali@google.com>
+ */
+#include "config.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <fcntl.h>
+
+#include "ext2fs/ext2_fs.h"
+#include "ext2fs/ext2fs.h"
+#include "e2p/e2p.h"
+
+#include "quotaio.h"
+#include "quotaio_v2.h"
+#include "quotaio_tree.h"
+#include "mkquota.h"
+#include "common.h"
+
+/* Needed for architectures where sizeof(int) != sizeof(void *) */
+#define UINT_TO_VOIDPTR(val) ((void *)(intptr_t)(val))
+#define VOIDPTR_TO_UINT(ptr) ((unsigned int)(intptr_t)(ptr))
+
+#if DEBUG_QUOTA
+static void print_inode(struct ext2_inode *inode)
+{
+ if (!inode)
+ return;
+
+ fprintf(stderr, " i_mode = %d\n", inode->i_mode);
+ fprintf(stderr, " i_uid = %d\n", inode->i_uid);
+ fprintf(stderr, " i_size = %d\n", inode->i_size);
+ fprintf(stderr, " i_atime = %d\n", inode->i_atime);
+ fprintf(stderr, " i_ctime = %d\n", inode->i_ctime);
+ fprintf(stderr, " i_mtime = %d\n", inode->i_mtime);
+ fprintf(stderr, " i_dtime = %d\n", inode->i_dtime);
+ fprintf(stderr, " i_gid = %d\n", inode->i_gid);
+ fprintf(stderr, " i_links_count = %d\n", inode->i_links_count);
+ fprintf(stderr, " i_blocks = %d\n", inode->i_blocks);
+ fprintf(stderr, " i_flags = %d\n", inode->i_flags);
+
+ return;
+}
+#endif
+
+/*
+ * Returns 0 if not able to find the quota file, otherwise returns its
+ * inode number.
+ */
+int quota_file_exists(ext2_filsys fs, int qtype, int fmt)
+{
+ char qf_name[256];
+ errcode_t ret;
+ ext2_ino_t ino;
+
+ if (qtype >= MAXQUOTAS)
+ return -EINVAL;
+
+ quota_get_qf_name(qtype, QFMT_VFS_V1, qf_name);
+
+ ret = ext2fs_lookup(fs, EXT2_ROOT_INO, qf_name, strlen(qf_name), 0,
+ &ino);
+ if (ret)
+ return 0;
+
+ return ino;
+}
+
+/*
+ * Set the value for reserved quota inode number field in superblock.
+ */
+void quota_set_sb_inum(ext2_filsys fs, ext2_ino_t ino, int qtype)
+{
+ ext2_ino_t *inump;
+
+ inump = (qtype == USRQUOTA) ? &fs->super->s_usr_quota_inum :
+ &fs->super->s_grp_quota_inum;
+
+ log_debug("setting quota ino in superblock: ino=%u, type=%d", ino,
+ qtype);
+ *inump = ino;
+ ext2fs_mark_super_dirty(fs);
+}
+
+errcode_t quota_remove_inode(ext2_filsys fs, int qtype)
+{
+ ext2_ino_t qf_ino;
+
+ ext2fs_read_bitmaps(fs);
+ qf_ino = (qtype == USRQUOTA) ? fs->super->s_usr_quota_inum :
+ fs->super->s_grp_quota_inum;
+ quota_set_sb_inum(fs, 0, qtype);
+ /* Truncate the inode only if its a reserved one. */
+ if (qf_ino < EXT2_FIRST_INODE(fs->super))
+ quota_inode_truncate(fs, qf_ino);
+
+ ext2fs_mark_super_dirty(fs);
+ fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
+ ext2fs_write_bitmaps(fs);
+ return 0;
+}
+
+static void write_dquots(dict_t *dict, struct quota_handle *qh)
+{
+ dnode_t *n;
+ struct dquot *dq;
+
+ for (n = dict_first(dict); n; n = dict_next(dict, n)) {
+ dq = dnode_get(n);
+ if (dq) {
+ dq->dq_h = qh;
+ update_grace_times(dq);
+ qh->qh_ops->commit_dquot(dq);
+ }
+ }
+}
+
+errcode_t quota_write_inode(quota_ctx_t qctx, int qtype)
+{
+ int retval = 0, i;
+ dict_t *dict;
+ ext2_filsys fs;
+ struct quota_handle *h = NULL;
+ int fmt = QFMT_VFS_V1;
+
+ if (!qctx)
+ return 0;
+
+ fs = qctx->fs;
+ retval = ext2fs_get_mem(sizeof(struct quota_handle), &h);
+ if (retval) {
+ log_err("Unable to allocate quota handle");
+ goto out;
+ }
+
+ ext2fs_read_bitmaps(fs);
+
+ for (i = 0; i < MAXQUOTAS; i++) {
+ if ((qtype != -1) && (i != qtype))
+ continue;
+
+ dict = qctx->quota_dict[i];
+ if (!dict)
+ continue;
+
+ retval = quota_file_create(h, fs, i, fmt);
+ if (retval < 0) {
+ log_err("Cannot initialize io on quotafile");
+ continue;
+ }
+
+ write_dquots(dict, h);
+ retval = quota_file_close(h);
+ if (retval < 0) {
+ log_err("Cannot finish IO on new quotafile: %s",
+ strerror(errno));
+ if (h->qh_qf.e2_file)
+ ext2fs_file_close(h->qh_qf.e2_file);
+ quota_inode_truncate(fs, h->qh_qf.ino);
+ continue;
+ }
+
+ /* Set quota inode numbers in superblock. */
+ quota_set_sb_inum(fs, h->qh_qf.ino, i);
+ ext2fs_mark_super_dirty(fs);
+ ext2fs_mark_bb_dirty(fs);
+ fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
+ }
+
+ ext2fs_write_bitmaps(fs);
+out:
+ if (h)
+ ext2fs_free_mem(&h);
+ return retval;
+}
+
+/******************************************************************/
+/* Helper functions for computing quota in memory. */
+/******************************************************************/
+
+static int dict_uint_cmp(const void *a, const void *b)
+{
+ unsigned int c, d;
+
+ c = VOIDPTR_TO_UINT(a);
+ d = VOIDPTR_TO_UINT(b);
+
+ return c - d;
+}
+
+static inline qid_t get_qid(struct ext2_inode *inode, int qtype)
+{
+ if (qtype == USRQUOTA)
+ return inode_uid(*inode);
+ return inode_gid(*inode);
+}
+
+static void quota_dnode_free(dnode_t *node,
+ void *context EXT2FS_ATTR((unused)))
+{
+ void *ptr = node ? dnode_get(node) : 0;
+
+ ext2fs_free_mem(&ptr);
+ free(node);
+}
+
+/*
+ * Set up the quota tracking data structures.
+ */
+errcode_t quota_init_context(quota_ctx_t *qctx, ext2_filsys fs, int qtype)
+{
+ int i, err = 0;
+ dict_t *dict;
+ quota_ctx_t ctx;
+
+ err = ext2fs_get_mem(sizeof(struct quota_ctx), &ctx);
+ if (err) {
+ log_err("Failed to allocate quota context");
+ return err;
+ }
+
+ memset(ctx, 0, sizeof(struct quota_ctx));
+ for (i = 0; i < MAXQUOTAS; i++) {
+ if ((qtype != -1) && (i != qtype))
+ continue;
+ err = ext2fs_get_mem(sizeof(dict_t), &dict);
+ if (err) {
+ log_err("Failed to allocate dictionary");
+ quota_release_context(&ctx);
+ return err;
+ }
+ ctx->quota_dict[i] = dict;
+ dict_init(dict, DICTCOUNT_T_MAX, dict_uint_cmp);
+ dict_set_allocator(dict, NULL, quota_dnode_free, NULL);
+ }
+
+ ctx->fs = fs;
+ *qctx = ctx;
+ return 0;
+}
+
+void quota_release_context(quota_ctx_t *qctx)
+{
+ dict_t *dict;
+ int i;
+ quota_ctx_t ctx;
+
+ if (!qctx)
+ return;
+
+ ctx = *qctx;
+ for (i = 0; i < MAXQUOTAS; i++) {
+ dict = ctx->quota_dict[i];
+ ctx->quota_dict[i] = 0;
+ if (dict) {
+ dict_free_nodes(dict);
+ free(dict);
+ }
+ }
+ *qctx = NULL;
+ free(ctx);
+}
+
+static struct dquot *get_dq(dict_t *dict, __u32 key)
+{
+ struct dquot *dq;
+ dnode_t *n;
+
+ n = dict_lookup(dict, UINT_TO_VOIDPTR(key));
+ if (n)
+ dq = dnode_get(n);
+ else {
+ if (ext2fs_get_mem(sizeof(struct dquot), &dq)) {
+ log_err("Unable to allocate dquot");
+ return NULL;
+ }
+ memset(dq, 0, sizeof(struct dquot));
+ dict_alloc_insert(dict, UINT_TO_VOIDPTR(key), dq);
+ dq->dq_id = key;
+ }
+ return dq;
+}
+
+
+/*
+ * Called to update the blocks used by a particular inode
+ */
+void quota_data_add(quota_ctx_t qctx, struct ext2_inode *inode, ext2_ino_t ino,
+ qsize_t space)
+{
+ struct dquot *dq;
+ dict_t *dict;
+ int i;
+
+ if (!qctx)
+ return;
+
+ log_debug("ADD_DATA: Inode: %u, UID/GID: %u/%u, space: %ld", ino,
+ inode_uid(*inode),
+ inode_gid(*inode), space);
+ for (i = 0; i < MAXQUOTAS; i++) {
+ dict = qctx->quota_dict[i];
+ if (dict) {
+ dq = get_dq(dict, get_qid(inode, i));
+ if (dq)
+ dq->dq_dqb.dqb_curspace += space;
+ }
+ }
+}
+
+/*
+ * Called to remove some blocks used by a particular inode
+ */
+void quota_data_sub(quota_ctx_t qctx, struct ext2_inode *inode, ext2_ino_t ino,
+ qsize_t space)
+{
+ struct dquot *dq;
+ dict_t *dict;
+ int i;
+
+ if (!qctx)
+ return;
+
+ log_debug("SUB_DATA: Inode: %u, UID/GID: %u/%u, space: %ld", ino,
+ inode_uid(*inode),
+ inode_gid(*inode), space);
+ for (i = 0; i < MAXQUOTAS; i++) {
+ dict = qctx->quota_dict[i];
+ if (dict) {
+ dq = get_dq(dict, get_qid(inode, i));
+ dq->dq_dqb.dqb_curspace -= space;
+ }
+ }
+}
+
+/*
+ * Called to count the files used by an inode's user/group
+ */
+void quota_data_inodes(quota_ctx_t qctx, struct ext2_inode *inode,
+ ext2_ino_t ino, int adjust)
+{
+ struct dquot *dq;
+ dict_t *dict;
+ int i;
+
+ if (!qctx)
+ return;
+
+ log_debug("ADJ_INODE: Inode: %u, UID/GID: %u/%u, adjust: %d", ino,
+ inode_uid(*inode),
+ inode_gid(*inode), adjust);
+ for (i = 0; i < MAXQUOTAS; i++) {
+ dict = qctx->quota_dict[i];
+ if (dict) {
+ dq = get_dq(dict, get_qid(inode, i));
+ dq->dq_dqb.dqb_curinodes += adjust;
+ }
+ }
+}
+
+errcode_t quota_compute_usage(quota_ctx_t qctx)
+{
+ ext2_filsys fs;
+ ext2_ino_t ino;
+ errcode_t ret;
+ struct ext2_inode inode;
+ qsize_t space;
+ ext2_inode_scan scan;
+
+ if (!qctx)
+ return 0;
+
+ fs = qctx->fs;
+ ret = ext2fs_open_inode_scan(fs, 0, &scan);
+ if (ret) {
+ log_err("while opening inode scan. ret=%ld", ret);
+ return ret;
+ }
+
+ while (1) {
+ ret = ext2fs_get_next_inode(scan, &ino, &inode);
+ if (ret) {
+ log_err("while getting next inode. ret=%ld", ret);
+ ext2fs_close_inode_scan(scan);
+ return ret;
+ }
+ if (ino == 0)
+ break;
+ if (inode.i_links_count &&
+ (ino == EXT2_ROOT_INO ||
+ ino >= EXT2_FIRST_INODE(fs->super))) {
+ space = ext2fs_inode_i_blocks(fs, &inode) << 9;
+ quota_data_add(qctx, &inode, ino, space);
+ quota_data_inodes(qctx, &inode, ino, +1);
+ }
+ }
+
+ ext2fs_close_inode_scan(scan);
+
+ return 0;
+}
+
+struct scan_dquots_data {
+ dict_t *quota_dict;
+ int update_limits; /* update limits from disk */
+ int update_usage;
+ int usage_is_inconsistent;
+};
+
+static int scan_dquots_callback(struct dquot *dquot, void *cb_data)
+{
+ struct scan_dquots_data *scan_data = cb_data;
+ dict_t *quota_dict = scan_data->quota_dict;
+ struct dquot *dq;
+
+ dq = get_dq(quota_dict, dquot->dq_id);
+ dq->dq_id = dquot->dq_id;
+ dq->dq_dqb.u.v2_mdqb.dqb_off = dquot->dq_dqb.u.v2_mdqb.dqb_off;
+
+ /* Check if there is inconsistancy. */
+ if (dq->dq_dqb.dqb_curspace != dquot->dq_dqb.dqb_curspace ||
+ dq->dq_dqb.dqb_curinodes != dquot->dq_dqb.dqb_curinodes) {
+ scan_data->usage_is_inconsistent = 1;
+ fprintf(stderr, "[QUOTA WARNING] Usage inconsistent for ID %d:"
+ "actual (%llu, %llu) != expected (%llu, %llu)\n",
+ dq->dq_id, (long long)dq->dq_dqb.dqb_curspace,
+ (long long)dq->dq_dqb.dqb_curinodes,
+ (long long)dquot->dq_dqb.dqb_curspace,
+ (long long)dquot->dq_dqb.dqb_curinodes);
+ }
+
+ if (scan_data->update_limits) {
+ dq->dq_dqb.dqb_ihardlimit = dquot->dq_dqb.dqb_ihardlimit;
+ dq->dq_dqb.dqb_isoftlimit = dquot->dq_dqb.dqb_isoftlimit;
+ dq->dq_dqb.dqb_bhardlimit = dquot->dq_dqb.dqb_bhardlimit;
+ dq->dq_dqb.dqb_bsoftlimit = dquot->dq_dqb.dqb_bsoftlimit;
+ }
+
+ if (scan_data->update_usage) {
+ dq->dq_dqb.dqb_curspace = dquot->dq_dqb.dqb_curspace;
+ dq->dq_dqb.dqb_curinodes = dquot->dq_dqb.dqb_curinodes;
+ }
+
+ return 0;
+}
+
+/*
+ * Read all dquots from quota file into memory
+ */
+static errcode_t quota_read_all_dquots(struct quota_handle *qh,
+ quota_ctx_t qctx, int update_limits)
+{
+ struct scan_dquots_data scan_data;
+
+ scan_data.quota_dict = qctx->quota_dict[qh->qh_type];
+ scan_data.update_limits = update_limits;
+ scan_data.update_usage = 0;
+
+ return qh->qh_ops->scan_dquots(qh, scan_dquots_callback, &scan_data);
+}
+
+/*
+ * Write all memory dquots into quota file
+ */
+#if 0 /* currently unused, but may be useful in the future? */
+static errcode_t quota_write_all_dquots(struct quota_handle *qh,
+ quota_ctx_t qctx)
+{
+ errcode_t err;
+
+ err = ext2fs_read_bitmaps(qctx->fs);
+ if (err)
+ return err;
+ write_dquots(qctx->quota_dict[qh->qh_type], qh);
+ ext2fs_mark_bb_dirty(qctx->fs);
+ qctx->fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
+ ext2fs_write_bitmaps(qctx->fs);
+ return 0;
+}
+#endif
+
+/*
+ * Updates the in-memory quota limits from the given quota inode.
+ */
+errcode_t quota_update_limits(quota_ctx_t qctx, ext2_ino_t qf_ino, int type)
+{
+ struct quota_handle *qh;
+ errcode_t err;
+
+ if (!qctx)
+ return 0;
+
+ err = ext2fs_get_mem(sizeof(struct quota_handle), &qh);
+ if (err) {
+ log_err("Unable to allocate quota handle");
+ return err;
+ }
+
+ err = quota_file_open(qh, qctx->fs, qf_ino, type, -1, 0);
+ if (err) {
+ log_err("Open quota file failed");
+ goto out;
+ }
+
+ quota_read_all_dquots(qh, qctx, 1);
+
+ err = quota_file_close(qh);
+ if (err) {
+ log_err("Cannot finish IO on new quotafile: %s",
+ strerror(errno));
+ if (qh->qh_qf.e2_file)
+ ext2fs_file_close(qh->qh_qf.e2_file);
+ }
+out:
+ ext2fs_free_mem(&qh);
+ return err;
+}
+
+/*
+ * Compares the measured quota in qctx->quota_dict with that in the quota inode
+ * on disk and updates the limits in qctx->quota_dict. 'usage_inconsistent' is
+ * set to 1 if the supplied and on-disk quota usage values are not identical.
+ */
+errcode_t quota_compare_and_update(quota_ctx_t qctx, int qtype,
+ int *usage_inconsistent)
+{
+ ext2_filsys fs = qctx->fs;
+ struct quota_handle qh;
+ struct scan_dquots_data scan_data;
+ ext2_ino_t qf_ino;
+ errcode_t err = 0;
+
+ if (!qctx->quota_dict[qtype])
+ goto out;
+
+ qf_ino = qtype == USRQUOTA ? fs->super->s_usr_quota_inum :
+ fs->super->s_grp_quota_inum;
+ err = quota_file_open(&qh, fs, qf_ino, qtype, -1, 0);
+ if (err) {
+ log_err("Open quota file failed");
+ goto out;
+ }
+
+ scan_data.quota_dict = qctx->quota_dict[qtype];
+ scan_data.update_limits = 1;
+ scan_data.update_usage = 0;
+ scan_data.usage_is_inconsistent = 0;
+ err = qh.qh_ops->scan_dquots(&qh, scan_dquots_callback, &scan_data);
+ if (err) {
+ log_err("Error scanning dquots");
+ goto out;
+ }
+ *usage_inconsistent = scan_data.usage_is_inconsistent;
+
+out:
+ return err;
+}