mirror of
https://github.com/kdave/btrfs-progs
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e278e0755f
Kernel commit efc0e69c2fea ("btrfs: introduce exclusive operation
BALANCE_PAUSED state") allows to start a device add when there's a
paused balance, eg. to let the balance finish when there's not enough
chunk space. Add the support for that, though this needs an updated
kernel to export the 'balance paused' in sysfs.
Signed-off-by: David Sterba <dsterba@suse.com>
131 lines
4.1 KiB
C
131 lines
4.1 KiB
C
/*
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* Copyright (C) 2007 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef __BTRFS_UTILS_H__
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#define __BTRFS_UTILS_H__
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#include <sys/stat.h>
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#include "kernel-shared/ctree.h"
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#include <dirent.h>
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#include <stdarg.h>
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#include "common/defs.h"
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#include "common/internal.h"
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#include "kernel-lib/sizes.h"
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#include "common/messages.h"
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#include "ioctl.h"
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#include "common/fsfeatures.h"
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enum exclusive_operation {
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BTRFS_EXCLOP_NONE,
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BTRFS_EXCLOP_BALANCE,
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BTRFS_EXCLOP_BALANCE_PAUSED,
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BTRFS_EXCLOP_DEV_ADD,
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BTRFS_EXCLOP_DEV_REMOVE,
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BTRFS_EXCLOP_DEV_REPLACE,
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BTRFS_EXCLOP_RESIZE,
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BTRFS_EXCLOP_SWAP_ACTIVATE,
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BTRFS_EXCLOP_UNKNOWN = -1,
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};
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/* 2 for "0x", 2 for each byte, plus nul */
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#define BTRFS_CSUM_STRING_LEN (2 + 2 * BTRFS_CSUM_SIZE + 1)
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void btrfs_format_csum(u16 csum_type, const u8 *data, char *output);
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u64 parse_qgroupid_or_path(const char *p);
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u64 arg_strtou64(const char *str);
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int get_fs_info(const char *path, struct btrfs_ioctl_fs_info_args *fi_args,
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struct btrfs_ioctl_dev_info_args **di_ret);
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int get_fsid(const char *path, u8 *fsid, int silent);
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int get_fsid_fd(int fd, u8 *fsid);
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int get_fs_exclop(int fd);
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int check_running_fs_exclop(int fd, enum exclusive_operation start, bool enqueue);
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const char *get_fs_exclop_name(int op);
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int get_label(const char *btrfs_dev, char *label);
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int set_label(const char *btrfs_dev, const char *label);
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int check_arg_type(const char *input);
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int get_label_mounted(const char *mount_path, char *labelp);
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int get_label_unmounted(const char *dev, char *label);
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int csum_tree_block(struct btrfs_fs_info *root, struct extent_buffer *buf,
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int verify);
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int ask_user(const char *question);
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int lookup_path_rootid(int fd, u64 *rootid);
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int find_mount_fsroot(const char *subvol, const char *subvolid, char **mount);
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int find_mount_root(const char *path, char **mount_root);
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int get_device_info(int fd, u64 devid,
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struct btrfs_ioctl_dev_info_args *di_args);
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int get_df(int fd, struct btrfs_ioctl_space_args **sargs_ret);
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const char *subvol_strip_mountpoint(const char *mnt, const char *full_path);
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int find_next_key(struct btrfs_path *path, struct btrfs_key *key);
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const char* btrfs_group_type_str(u64 flag);
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const char* btrfs_group_profile_str(u64 flag);
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int count_digits(u64 num);
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u64 div_factor(u64 num, int factor);
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int string_is_numerical(const char *str);
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int prefixcmp(const char *str, const char *prefix);
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unsigned long total_memory(void);
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void print_device_info(struct btrfs_device *device, char *prefix);
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void print_all_devices(struct list_head *devices);
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#define BTRFS_BCONF_UNSET -1
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#define BTRFS_BCONF_QUIET 0
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/*
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* Global program state, configurable by command line and available to
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* functions without extra context passing.
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*/
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struct btrfs_config {
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unsigned int output_format;
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/*
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* Values:
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* BTRFS_BCONF_QUIET
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* BTRFS_BCONF_UNSET
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* > 0: verbose level
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*/
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int verbose;
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};
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extern struct btrfs_config bconf;
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void btrfs_config_init(void);
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void bconf_be_verbose(void);
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void bconf_be_quiet(void);
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/* Pseudo random number generator wrappers */
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int rand_int(void);
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u8 rand_u8(void);
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u16 rand_u16(void);
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u32 rand_u32(void);
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u64 rand_u64(void);
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unsigned int rand_range(unsigned int upper);
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void init_rand_seed(u64 seed);
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char *btrfs_test_for_multiple_profiles(int fd);
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int btrfs_warn_multiple_profiles(int fd);
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int sysfs_open_file(const char *name);
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int sysfs_open_fsid_file(int fd, const char *filename);
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int sysfs_read_file(int fd, char *buf, size_t size);
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int sysfs_open_fsid_dir(int fd, const char *dirname);
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#endif
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