diff options
Diffstat (limited to 'ubifs-utils/common/super.c')
-rw-r--r-- | ubifs-utils/common/super.c | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/ubifs-utils/common/super.c b/ubifs-utils/common/super.c deleted file mode 100644 index eee0197..0000000 --- a/ubifs-utils/common/super.c +++ /dev/null @@ -1,123 +0,0 @@ -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <unistd.h> -#include <fcntl.h> -#include <sys/types.h> -#include <sys/stat.h> - -#include "defs.h" - -/** - * open_ubi - open the libubi. - * @c: the UBIFS file-system description object - * @node: name of the UBI volume character device to fetch information about - * - * This function opens libubi, and initialize device & volume information - * according to @node. Returns %0 in case of success and %-1 in case of failure. - */ -int open_ubi(struct ubifs_info *c, const char *node) -{ - struct stat st; - - if (stat(node, &st) || !S_ISCHR(st.st_mode)) - return -1; - - c->libubi = libubi_open(); - if (!c->libubi) - return -1; - if (ubi_get_vol_info(c->libubi, node, &c->vi)) - goto out_err; - if (ubi_get_dev_info1(c->libubi, c->vi.dev_num, &c->di)) - goto out_err; - - return 0; - -out_err: - close_ubi(c); - return -1; -} - -void close_ubi(struct ubifs_info *c) -{ - if (c->libubi) { - libubi_close(c->libubi); - c->libubi = NULL; - } -} - -/** - * open_target - open the output target. - * @c: the UBIFS file-system description object - * - * Open the output target. The target can be an UBI volume - * or a file. - * - * Returns %0 in case of success and %-1 in case of failure. - */ -int open_target(struct ubifs_info *c) -{ - if (c->libubi) { - c->dev_fd = open(c->dev_name, O_RDWR | O_EXCL); - - if (c->dev_fd == -1) - return sys_errmsg("cannot open the UBI volume '%s'", - c->dev_name); - if (ubi_set_property(c->dev_fd, UBI_VOL_PROP_DIRECT_WRITE, 1)) { - close(c->dev_fd); - return sys_errmsg("ubi_set_property(set direct_write) failed"); - } - } else { - c->dev_fd = open(c->dev_name, O_CREAT | O_RDWR | O_TRUNC, - S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH); - if (c->dev_fd == -1) - return sys_errmsg("cannot create output file '%s'", - c->dev_name); - } - return 0; -} - - -/** - * close_target - close the output target. - * @c: the UBIFS file-system description object - * - * Close the output target. If the target was an UBI - * volume, also close libubi. - * - * Returns %0 in case of success and %-1 in case of failure. - */ -int close_target(struct ubifs_info *c) -{ - if (c->dev_fd >= 0) { - if (c->libubi && ubi_set_property(c->dev_fd, UBI_VOL_PROP_DIRECT_WRITE, 0)) - return sys_errmsg("ubi_set_property(clear direct_write) failed"); - if (close(c->dev_fd) == -1) - return sys_errmsg("cannot close the target '%s'", c->dev_name); - } - return 0; -} - -/** - * check_volume_empty - check if the UBI volume is empty. - * @c: the UBIFS file-system description object - * - * This function checks if the UBI volume is empty by looking if its LEBs are - * mapped or not. - * - * Returns %0 in case of success, %1 is the volume is not empty, - * and a negative error code in case of failure. - */ -int check_volume_empty(struct ubifs_info *c) -{ - int lnum, err; - - for (lnum = 0; lnum < c->vi.rsvd_lebs; lnum++) { - err = ubi_is_mapped(c->dev_fd, lnum); - if (err < 0) - return err; - if (err == 1) - return 1; - } - return 0; -} |