[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/quotaio.c b/ap/app/e2fsprogs/e2fsprogs-1.42.9/lib/quota/quotaio.c
new file mode 100644
index 0000000..1bdcba6
--- /dev/null
+++ b/ap/app/e2fsprogs/e2fsprogs-1.42.9/lib/quota/quotaio.c
@@ -0,0 +1,382 @@
+/** quotaio.c
+ *
+ * Generic IO operations on quotafiles
+ * Jan Kara <jack@suse.cz> - sponsored by SuSE CR
+ * Aditya Kali <adityakali@google.com> - Ported to e2fsprogs
+ */
+
+#include "config.h"
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/file.h>
+
+#include "common.h"
+#include "quotaio.h"
+
+static const char * const extensions[MAXQUOTAS] = {"user", "group"};
+static const char * const basenames[] = {
+ "", /* undefined */
+ "quota", /* QFMT_VFS_OLD */
+ "aquota", /* QFMT_VFS_V0 */
+ "", /* QFMT_OCFS2 */
+ "aquota" /* QFMT_VFS_V1 */
+};
+
+/* Header in all newer quotafiles */
+struct disk_dqheader {
+ u_int32_t dqh_magic;
+ u_int32_t dqh_version;
+} __attribute__ ((packed));
+
+/**
+ * Convert type of quota to written representation
+ */
+const char *type2name(int type)
+{
+ return extensions[type];
+}
+
+/**
+ * Creates a quota file name for given type and format.
+ */
+const char *quota_get_qf_name(int type, int fmt, char *buf)
+{
+ if (!buf)
+ return NULL;
+ snprintf(buf, QUOTA_NAME_LEN, "%s.%s",
+ basenames[fmt], extensions[type]);
+
+ return buf;
+}
+
+const char *quota_get_qf_path(const char *mntpt, int qtype, int fmt,
+ char *path_buf, size_t path_buf_size)
+{
+ char qf_name[QUOTA_NAME_LEN];
+
+ if (!mntpt || !path_buf || !path_buf_size)
+ return NULL;
+
+ strncpy(path_buf, mntpt, path_buf_size);
+ strncat(path_buf, "/", 1);
+ strncat(path_buf, quota_get_qf_name(qtype, fmt, qf_name),
+ path_buf_size - strlen(path_buf));
+
+ return path_buf;
+}
+
+/*
+ * Set grace time if needed
+ */
+void update_grace_times(struct dquot *q)
+{
+ time_t now;
+
+ time(&now);
+ if (q->dq_dqb.dqb_bsoftlimit && toqb(q->dq_dqb.dqb_curspace) >
+ q->dq_dqb.dqb_bsoftlimit) {
+ if (!q->dq_dqb.dqb_btime)
+ q->dq_dqb.dqb_btime =
+ now + q->dq_h->qh_info.dqi_bgrace;
+ } else {
+ q->dq_dqb.dqb_btime = 0;
+ }
+
+ if (q->dq_dqb.dqb_isoftlimit && q->dq_dqb.dqb_curinodes >
+ q->dq_dqb.dqb_isoftlimit) {
+ if (!q->dq_dqb.dqb_itime)
+ q->dq_dqb.dqb_itime =
+ now + q->dq_h->qh_info.dqi_igrace;
+ } else {
+ q->dq_dqb.dqb_itime = 0;
+ }
+}
+
+static int compute_num_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
+ e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
+ blk64_t ref_block EXT2FS_ATTR((unused)),
+ int ref_offset EXT2FS_ATTR((unused)),
+ void *private)
+{
+ blk64_t *num_blocks = private;
+
+ *num_blocks += 1;
+ return 0;
+}
+
+errcode_t quota_inode_truncate(ext2_filsys fs, ext2_ino_t ino)
+{
+ struct ext2_inode inode;
+ errcode_t err;
+
+ if ((err = ext2fs_read_inode(fs, ino, &inode)))
+ return err;
+
+ if ((ino == EXT4_USR_QUOTA_INO) || (ino == EXT4_GRP_QUOTA_INO)) {
+ inode.i_dtime = fs->now ? fs->now : time(0);
+ if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
+ return 0;
+ err = ext2fs_punch(fs, ino, &inode, NULL, 0, ~0ULL);
+ if (err)
+ return err;
+ fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
+ memset(&inode, 0, sizeof(struct ext2_inode));
+ } else {
+ inode.i_flags &= ~EXT2_IMMUTABLE_FL;
+ }
+ err = ext2fs_write_inode(fs, ino, &inode);
+ return err;
+}
+
+static ext2_off64_t compute_inode_size(ext2_filsys fs, ext2_ino_t ino)
+{
+ blk64_t num_blocks = 0;
+
+ ext2fs_block_iterate3(fs, ino,
+ BLOCK_FLAG_READ_ONLY,
+ NULL,
+ compute_num_blocks_proc,
+ &num_blocks);
+ return num_blocks * fs->blocksize;
+}
+
+/* Functions to read/write quota file. */
+static unsigned int quota_write_nomount(struct quota_file *qf,
+ ext2_loff_t offset,
+ void *buf, unsigned int size)
+{
+ ext2_file_t e2_file = qf->e2_file;
+ unsigned int bytes_written = 0;
+ errcode_t err;
+
+ err = ext2fs_file_llseek(e2_file, offset, EXT2_SEEK_SET, NULL);
+ if (err) {
+ log_err("ext2fs_file_llseek failed: %ld", err);
+ return 0;
+ }
+
+ err = ext2fs_file_write(e2_file, buf, size, &bytes_written);
+ if (err) {
+ log_err("ext2fs_file_write failed: %ld", err);
+ return 0;
+ }
+
+ /* Correct inode.i_size is set in end_io. */
+ return bytes_written;
+}
+
+static unsigned int quota_read_nomount(struct quota_file *qf,
+ ext2_loff_t offset,
+ void *buf, unsigned int size)
+{
+ ext2_file_t e2_file = qf->e2_file;
+ unsigned int bytes_read = 0;
+ errcode_t err;
+
+ err = ext2fs_file_llseek(e2_file, offset, EXT2_SEEK_SET, NULL);
+ if (err) {
+ log_err("ext2fs_file_llseek failed: %ld", err);
+ return 0;
+ }
+
+ err = ext2fs_file_read(e2_file, buf, size, &bytes_read);
+ if (err) {
+ log_err("ext2fs_file_read failed: %ld", err);
+ return 0;
+ }
+
+ return bytes_read;
+}
+
+/*
+ * Detect quota format and initialize quota IO
+ */
+errcode_t quota_file_open(struct quota_handle *h, ext2_filsys fs,
+ ext2_ino_t qf_ino, int type, int fmt, int flags)
+{
+ ext2_file_t e2_file;
+ errcode_t err;
+
+ if (fmt == -1)
+ fmt = QFMT_VFS_V1;
+
+ err = ext2fs_read_bitmaps(fs);
+ if (err)
+ return err;
+
+ log_debug("Opening quota ino=%lu, type=%d", qf_ino, type);
+ err = ext2fs_file_open(fs, qf_ino, flags, &e2_file);
+ if (err) {
+ log_err("ext2fs_file_open failed: %s", error_message(err));
+ return err;
+ }
+ h->qh_qf.e2_file = e2_file;
+
+ h->qh_qf.fs = fs;
+ h->qh_qf.ino = qf_ino;
+ h->e2fs_write = quota_write_nomount;
+ h->e2fs_read = quota_read_nomount;
+ h->qh_io_flags = 0;
+ h->qh_type = type;
+ h->qh_fmt = fmt;
+ memset(&h->qh_info, 0, sizeof(h->qh_info));
+ h->qh_ops = "afile_ops_2;
+
+ if (h->qh_ops->check_file &&
+ (h->qh_ops->check_file(h, type, fmt) == 0)) {
+ log_err("qh_ops->check_file failed");
+ ext2fs_file_close(e2_file);
+ return -1;
+ }
+
+ if (h->qh_ops->init_io && (h->qh_ops->init_io(h) < 0)) {
+ log_err("qh_ops->init_io failed");
+ ext2fs_file_close(e2_file);
+ return -1;
+ }
+
+ return 0;
+}
+
+static errcode_t quota_inode_init_new(ext2_filsys fs, ext2_ino_t ino)
+{
+ struct ext2_inode inode;
+ errcode_t err = 0;
+
+ err = ext2fs_read_inode(fs, ino, &inode);
+ if (err) {
+ log_err("ex2fs_read_inode failed");
+ return err;
+ }
+
+ if (EXT2_I_SIZE(&inode))
+ quota_inode_truncate(fs, ino);
+
+ memset(&inode, 0, sizeof(struct ext2_inode));
+ ext2fs_iblk_set(fs, &inode, 0);
+ inode.i_atime = inode.i_mtime =
+ inode.i_ctime = fs->now ? fs->now : time(0);
+ inode.i_links_count = 1;
+ inode.i_mode = LINUX_S_IFREG | 0600;
+ inode.i_flags |= EXT2_IMMUTABLE_FL;
+ if (fs->super->s_feature_incompat &
+ EXT3_FEATURE_INCOMPAT_EXTENTS)
+ inode.i_flags |= EXT4_EXTENTS_FL;
+
+ err = ext2fs_write_new_inode(fs, ino, &inode);
+ if (err) {
+ log_err("ext2fs_write_new_inode failed: %ld", err);
+ return err;
+ }
+ return err;
+}
+
+/*
+ * Create new quotafile of specified format on given filesystem
+ */
+errcode_t quota_file_create(struct quota_handle *h, ext2_filsys fs, int type, int fmt)
+{
+ ext2_file_t e2_file;
+ int err;
+ unsigned long qf_inum;
+
+ if (fmt == -1)
+ fmt = QFMT_VFS_V1;
+
+ h->qh_qf.fs = fs;
+ if (type == USRQUOTA)
+ qf_inum = EXT4_USR_QUOTA_INO;
+ else if (type == GRPQUOTA)
+ qf_inum = EXT4_GRP_QUOTA_INO;
+ else
+ return -1;
+
+ err = ext2fs_read_bitmaps(fs);
+ if (err)
+ goto out_err;
+
+ err = quota_inode_init_new(fs, qf_inum);
+ if (err) {
+ log_err("init_new_quota_inode failed");
+ goto out_err;
+ }
+ h->qh_qf.ino = qf_inum;
+ h->e2fs_write = quota_write_nomount;
+ h->e2fs_read = quota_read_nomount;
+
+ log_debug("Creating quota ino=%lu, type=%d", qf_inum, type);
+ err = ext2fs_file_open(fs, qf_inum,
+ EXT2_FILE_WRITE | EXT2_FILE_CREATE, &e2_file);
+ if (err) {
+ log_err("ext2fs_file_open failed: %d", err);
+ goto out_err;
+ }
+ h->qh_qf.e2_file = e2_file;
+
+ h->qh_io_flags = 0;
+ h->qh_type = type;
+ h->qh_fmt = fmt;
+ memset(&h->qh_info, 0, sizeof(h->qh_info));
+ h->qh_ops = "afile_ops_2;
+
+ if (h->qh_ops->new_io && (h->qh_ops->new_io(h) < 0)) {
+ log_err("qh_ops->new_io failed");
+ goto out_err1;
+ }
+
+ return 0;
+
+out_err1:
+ ext2fs_file_close(e2_file);
+out_err:
+
+ if (qf_inum)
+ quota_inode_truncate(fs, qf_inum);
+
+ return -1;
+}
+
+/*
+ * Close quotafile and release handle
+ */
+errcode_t quota_file_close(struct quota_handle *h)
+{
+ if (h->qh_io_flags & IOFL_INFODIRTY) {
+ if (h->qh_ops->write_info && h->qh_ops->write_info(h) < 0)
+ return -1;
+ h->qh_io_flags &= ~IOFL_INFODIRTY;
+ }
+
+ if (h->qh_ops->end_io && h->qh_ops->end_io(h) < 0)
+ return -1;
+ if (h->qh_qf.e2_file) {
+ ext2fs_file_flush(h->qh_qf.e2_file);
+ ext2fs_file_set_size2(h->qh_qf.e2_file,
+ compute_inode_size(h->qh_qf.fs, h->qh_qf.ino));
+ ext2fs_file_close(h->qh_qf.e2_file);
+ }
+
+ return 0;
+}
+
+/*
+ * Create empty quota structure
+ */
+struct dquot *get_empty_dquot(void)
+{
+ struct dquot *dquot;
+
+ if (ext2fs_get_memzero(sizeof(struct dquot), &dquot)) {
+ log_err("Failed to allocate dquot");
+ return NULL;
+ }
+
+ dquot->dq_id = -1;
+ return dquot;
+}