busybox/e2fsprogs/fsck.c

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/* vi: set sw=4 ts=4: */
/*
* fsck --- A generic, parallelizing front-end for the fsck program.
* It will automatically try to run fsck programs in parallel if the
* devices are on separate spindles. It is based on the same ideas as
* the generic front end for fsck by David Engel and Fred van Kempen,
* but it has been completely rewritten from scratch to support
* parallel execution.
*
* Written by Theodore Ts'o, <tytso@mit.edu>
*
* Miquel van Smoorenburg (miquels@drinkel.ow.org) 20-Oct-1994:
* o Changed -t fstype to behave like with mount when -A (all file
* systems) or -M (like mount) is specified.
* o fsck looks if it can find the fsck.type program to decide
* if it should ignore the fs type. This way more fsck programs
* can be added without changing this front-end.
* o -R flag skip root file system.
*
* Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
* 2001, 2002, 2003, 2004, 2005 by Theodore Ts'o.
*
* Licensed under GPLv2, see file LICENSE in this source tree.
*/
/* All filesystem specific hooks have been removed.
* If filesystem cannot be determined, we will execute
* "fsck.auto". Currently this also happens if you specify
* UUID=xxx or LABEL=xxx as an object to check.
* Detection code for that is also probably has to be in fsck.auto.
*
* In other words, this is _really_ is just a driver program which
* spawns actual fsck.something for each filesystem to check.
* It doesn't guess filesystem types from on-disk format.
*/
//config:config FSCK
//config: bool "fsck (7.4 kb)"
//config: default y
//config: help
//config: fsck is used to check and optionally repair one or more filesystems.
//config: In actuality, fsck is simply a front-end for the various file system
//config: checkers (fsck.fstype) available under Linux.
//applet:IF_FSCK(APPLET(fsck, BB_DIR_SBIN, BB_SUID_DROP))
//kbuild:lib-$(CONFIG_FSCK) += fsck.o
//usage:#define fsck_trivial_usage
//usage: "[-ANPRTV] [-t FSTYPE] [FS_OPTS] [BLOCKDEV]..."
//usage:#define fsck_full_usage "\n\n"
//usage: "Check and repair filesystems\n"
//usage: "\n -A Walk /etc/fstab and check all filesystems"
//usage: "\n -N Don't execute, just show what would be done"
//usage: "\n -P With -A, check filesystems in parallel"
//usage: "\n -R With -A, skip the root filesystem"
//usage: "\n -T Don't show title on startup"
//usage: "\n -V Verbose"
//DO_PROGRESS_INDICATOR is off:
////usage: "\n -C FD Write status information to specified file descriptor"
//usage: "\n -t TYPE List of filesystem types to check"
#include "libbb.h"
#include "common_bufsiz.h"
/* "progress indicator" code is somewhat buggy and ext[23] specific.
* We should be filesystem agnostic. IOW: there should be a well-defined
* API for fsck.something, NOT ad-hoc hacks in generic fsck. */
#define DO_PROGRESS_INDICATOR 0
/* fsck 1.41.4 (27-Jan-2009) manpage says:
* 0 - No errors
* 1 - File system errors corrected
* 2 - System should be rebooted
* 4 - File system errors left uncorrected
* 8 - Operational error
* 16 - Usage or syntax error
* 32 - Fsck canceled by user request
* 128 - Shared library error
*/
#define EXIT_OK 0
#define EXIT_NONDESTRUCT 1
#define EXIT_DESTRUCT 2
#define EXIT_UNCORRECTED 4
#define EXIT_ERROR 8
#define EXIT_USAGE 16
#define FSCK_CANCELED 32 /* Aborted with a signal or ^C */
/*
* Internal structure for mount table entries.
*/
struct fs_info {
2007-01-19 07:33:14 +05:30
struct fs_info *next;
char *device;
char *mountpt;
char *type;
char *opts;
int passno;
int flags;
};
#define FLAG_DONE 1
#define FLAG_PROGRESS 2
/*
* Structure to allow exit codes to be stored
*/
struct fsck_instance {
2007-01-19 07:33:14 +05:30
struct fsck_instance *next;
int pid;
int flags;
#if DO_PROGRESS_INDICATOR
time_t start_time;
#endif
char *prog;
char *device;
char *base_device; /* /dev/hda for /dev/hdaN etc */
};
static const char ignored_types[] ALIGN1 =
"ignore\0"
"iso9660\0"
"nfs\0"
"proc\0"
"sw\0"
"swap\0"
"tmpfs\0"
"devpts\0";
2006-12-26 08:21:29 +05:30
#if 0
static const char really_wanted[] ALIGN1 =
"minix\0"
"ext2\0"
"ext3\0"
"jfs\0"
"reiserfs\0"
"xiafs\0"
"xfs\0";
2006-12-26 08:21:29 +05:30
#endif
#define BASE_MD "/dev/md"
struct globals {
char **args;
int num_args;
int verbose;
2007-01-19 07:33:14 +05:30
#define FS_TYPE_FLAG_NORMAL 0
#define FS_TYPE_FLAG_OPT 1
#define FS_TYPE_FLAG_NEGOPT 2
char **fs_type_list;
uint8_t *fs_type_flag;
smallint fs_type_negated;
smallint noexecute;
smallint serialize;
smallint skip_root;
/* smallint like_mount; */
smallint parallel_root;
smallint force_all_parallel;
smallint kill_sent;
#if DO_PROGRESS_INDICATOR
smallint progress;
int progress_fd;
#endif
int num_running;
int max_running;
char *fstype;
struct fs_info *filesys_info;
struct fs_info *filesys_last;
struct fsck_instance *instance_list;
} FIX_ALIASING;
#define G (*(struct globals*)bb_common_bufsiz1)
#define INIT_G() do { \
setup_common_bufsiz(); \
BUILD_BUG_ON(sizeof(G) > COMMON_BUFSIZE); \
} while (0)
/*
* Return the "base device" given a particular device; this is used to
* assure that we only fsck one partition on a particular drive at any
* one time. Otherwise, the disk heads will be seeking all over the
* place. If the base device cannot be determined, return NULL.
*
* The base_device() function returns an allocated string which must
* be freed.
*/
#if ENABLE_FEATURE_DEVFS
/*
* Required for the uber-silly devfs /dev/ide/host1/bus2/target3/lun3
* pathames.
*/
static const char *const devfs_hier[] ALIGN_PTR = {
"host", "bus", "target", "lun", NULL
};
#endif
static char *base_device(const char *device)
{
char *str, *cp;
#if ENABLE_FEATURE_DEVFS
const char *const *hier;
const char *disk;
int len;
#endif
str = xstrdup(device);
/* Skip over "/dev/"; if it's not present, give up */
cp = skip_dev_pfx(str);
if (cp == str)
goto errout;
/*
* For md devices, we treat them all as if they were all
* on one disk, since we don't know how to parallelize them.
*/
if (cp[0] == 'm' && cp[1] == 'd') {
cp[2] = 0;
return str;
}
/* Handle DAC 960 devices */
libbb: introduce and use is_prefixed_with() function old new delta is_prefixed_with - 18 +18 complete_username 78 77 -1 man_main 737 735 -2 fsck_device 429 427 -2 unpack_ar_archive 80 76 -4 strip_unsafe_prefix 105 101 -4 singlemount 1054 1050 -4 rtc_adjtime_is_utc 90 86 -4 resolve_mount_spec 88 84 -4 parse_one_line 1029 1025 -4 parse_conf 1460 1456 -4 may_wakeup 83 79 -4 loadkmap_main 219 215 -4 get_irqs_from_stat 103 99 -4 get_header_cpio 913 909 -4 findfs_main 79 75 -4 fbsplash_main 1230 1226 -4 load_crontab 776 771 -5 expand_vars_to_list 1151 1146 -5 date_main 881 876 -5 skip_dev_pfx 30 24 -6 make_device 2199 2193 -6 complete_cmd_dir_file 773 767 -6 run_applet_and_exit 715 708 -7 uudecode_main 321 313 -8 pwdx_main 197 189 -8 execute 568 560 -8 i2cdetect_main 1186 1176 -10 procps_scan 1242 1230 -12 procps_read_smaps 1017 1005 -12 process_module 746 734 -12 patch_main 1903 1891 -12 nfsmount 3572 3560 -12 stack_machine 126 112 -14 process_timer_stats 449 435 -14 match_fstype 111 97 -14 do_ipaddr 1344 1330 -14 open_list_and_close 359 343 -16 get_header_tar 1795 1779 -16 prepend_new_eth_table 340 323 -17 fsck_main 1811 1794 -17 find_iface_state 56 38 -18 dnsd_main 1321 1303 -18 base_device 179 158 -21 find_keyword 104 82 -22 handle_incoming_and_exit 2785 2762 -23 parse_and_put_prompt 774 746 -28 modinfo 347 317 -30 find_action 204 171 -33 update_passwd 1470 1436 -34 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540) Total: -522 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-03-12 22:18:34 +05:30
if (is_prefixed_with(cp, "rd/")) {
cp += 3;
if (cp[0] != 'c' || !isdigit(cp[1])
|| cp[2] != 'd' || !isdigit(cp[3]))
goto errout;
cp[4] = 0;
return str;
}
/* Now let's handle /dev/hd* and /dev/sd* devices.... */
if ((cp[0] == 'h' || cp[0] == 's') && cp[1] == 'd') {
cp += 2;
/* If there's a single number after /dev/hd, skip it */
if (isdigit(*cp))
cp++;
/* What follows must be an alpha char, or give up */
if (!isalpha(*cp))
goto errout;
cp[1] = 0;
return str;
}
#if ENABLE_FEATURE_DEVFS
/* Now let's handle devfs (ugh) names */
len = 0;
libbb: introduce and use is_prefixed_with() function old new delta is_prefixed_with - 18 +18 complete_username 78 77 -1 man_main 737 735 -2 fsck_device 429 427 -2 unpack_ar_archive 80 76 -4 strip_unsafe_prefix 105 101 -4 singlemount 1054 1050 -4 rtc_adjtime_is_utc 90 86 -4 resolve_mount_spec 88 84 -4 parse_one_line 1029 1025 -4 parse_conf 1460 1456 -4 may_wakeup 83 79 -4 loadkmap_main 219 215 -4 get_irqs_from_stat 103 99 -4 get_header_cpio 913 909 -4 findfs_main 79 75 -4 fbsplash_main 1230 1226 -4 load_crontab 776 771 -5 expand_vars_to_list 1151 1146 -5 date_main 881 876 -5 skip_dev_pfx 30 24 -6 make_device 2199 2193 -6 complete_cmd_dir_file 773 767 -6 run_applet_and_exit 715 708 -7 uudecode_main 321 313 -8 pwdx_main 197 189 -8 execute 568 560 -8 i2cdetect_main 1186 1176 -10 procps_scan 1242 1230 -12 procps_read_smaps 1017 1005 -12 process_module 746 734 -12 patch_main 1903 1891 -12 nfsmount 3572 3560 -12 stack_machine 126 112 -14 process_timer_stats 449 435 -14 match_fstype 111 97 -14 do_ipaddr 1344 1330 -14 open_list_and_close 359 343 -16 get_header_tar 1795 1779 -16 prepend_new_eth_table 340 323 -17 fsck_main 1811 1794 -17 find_iface_state 56 38 -18 dnsd_main 1321 1303 -18 base_device 179 158 -21 find_keyword 104 82 -22 handle_incoming_and_exit 2785 2762 -23 parse_and_put_prompt 774 746 -28 modinfo 347 317 -30 find_action 204 171 -33 update_passwd 1470 1436 -34 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540) Total: -522 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-03-12 22:18:34 +05:30
if (is_prefixed_with(cp, "ide/"))
len = 4;
libbb: introduce and use is_prefixed_with() function old new delta is_prefixed_with - 18 +18 complete_username 78 77 -1 man_main 737 735 -2 fsck_device 429 427 -2 unpack_ar_archive 80 76 -4 strip_unsafe_prefix 105 101 -4 singlemount 1054 1050 -4 rtc_adjtime_is_utc 90 86 -4 resolve_mount_spec 88 84 -4 parse_one_line 1029 1025 -4 parse_conf 1460 1456 -4 may_wakeup 83 79 -4 loadkmap_main 219 215 -4 get_irqs_from_stat 103 99 -4 get_header_cpio 913 909 -4 findfs_main 79 75 -4 fbsplash_main 1230 1226 -4 load_crontab 776 771 -5 expand_vars_to_list 1151 1146 -5 date_main 881 876 -5 skip_dev_pfx 30 24 -6 make_device 2199 2193 -6 complete_cmd_dir_file 773 767 -6 run_applet_and_exit 715 708 -7 uudecode_main 321 313 -8 pwdx_main 197 189 -8 execute 568 560 -8 i2cdetect_main 1186 1176 -10 procps_scan 1242 1230 -12 procps_read_smaps 1017 1005 -12 process_module 746 734 -12 patch_main 1903 1891 -12 nfsmount 3572 3560 -12 stack_machine 126 112 -14 process_timer_stats 449 435 -14 match_fstype 111 97 -14 do_ipaddr 1344 1330 -14 open_list_and_close 359 343 -16 get_header_tar 1795 1779 -16 prepend_new_eth_table 340 323 -17 fsck_main 1811 1794 -17 find_iface_state 56 38 -18 dnsd_main 1321 1303 -18 base_device 179 158 -21 find_keyword 104 82 -22 handle_incoming_and_exit 2785 2762 -23 parse_and_put_prompt 774 746 -28 modinfo 347 317 -30 find_action 204 171 -33 update_passwd 1470 1436 -34 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540) Total: -522 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-03-12 22:18:34 +05:30
if (is_prefixed_with(cp, "scsi/"))
len = 5;
if (len) {
cp += len;
/*
* Now we proceed down the expected devfs hierarchy.
* i.e., .../host1/bus2/target3/lun4/...
* If we don't find the expected token, followed by
* some number of digits at each level, abort.
*/
for (hier = devfs_hier; *hier; hier++) {
libbb: introduce and use is_prefixed_with() function old new delta is_prefixed_with - 18 +18 complete_username 78 77 -1 man_main 737 735 -2 fsck_device 429 427 -2 unpack_ar_archive 80 76 -4 strip_unsafe_prefix 105 101 -4 singlemount 1054 1050 -4 rtc_adjtime_is_utc 90 86 -4 resolve_mount_spec 88 84 -4 parse_one_line 1029 1025 -4 parse_conf 1460 1456 -4 may_wakeup 83 79 -4 loadkmap_main 219 215 -4 get_irqs_from_stat 103 99 -4 get_header_cpio 913 909 -4 findfs_main 79 75 -4 fbsplash_main 1230 1226 -4 load_crontab 776 771 -5 expand_vars_to_list 1151 1146 -5 date_main 881 876 -5 skip_dev_pfx 30 24 -6 make_device 2199 2193 -6 complete_cmd_dir_file 773 767 -6 run_applet_and_exit 715 708 -7 uudecode_main 321 313 -8 pwdx_main 197 189 -8 execute 568 560 -8 i2cdetect_main 1186 1176 -10 procps_scan 1242 1230 -12 procps_read_smaps 1017 1005 -12 process_module 746 734 -12 patch_main 1903 1891 -12 nfsmount 3572 3560 -12 stack_machine 126 112 -14 process_timer_stats 449 435 -14 match_fstype 111 97 -14 do_ipaddr 1344 1330 -14 open_list_and_close 359 343 -16 get_header_tar 1795 1779 -16 prepend_new_eth_table 340 323 -17 fsck_main 1811 1794 -17 find_iface_state 56 38 -18 dnsd_main 1321 1303 -18 base_device 179 158 -21 find_keyword 104 82 -22 handle_incoming_and_exit 2785 2762 -23 parse_and_put_prompt 774 746 -28 modinfo 347 317 -30 find_action 204 171 -33 update_passwd 1470 1436 -34 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540) Total: -522 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-03-12 22:18:34 +05:30
cp = is_prefixed_with(cp, *hier);
if (!cp)
goto errout;
libbb: introduce and use is_prefixed_with() function old new delta is_prefixed_with - 18 +18 complete_username 78 77 -1 man_main 737 735 -2 fsck_device 429 427 -2 unpack_ar_archive 80 76 -4 strip_unsafe_prefix 105 101 -4 singlemount 1054 1050 -4 rtc_adjtime_is_utc 90 86 -4 resolve_mount_spec 88 84 -4 parse_one_line 1029 1025 -4 parse_conf 1460 1456 -4 may_wakeup 83 79 -4 loadkmap_main 219 215 -4 get_irqs_from_stat 103 99 -4 get_header_cpio 913 909 -4 findfs_main 79 75 -4 fbsplash_main 1230 1226 -4 load_crontab 776 771 -5 expand_vars_to_list 1151 1146 -5 date_main 881 876 -5 skip_dev_pfx 30 24 -6 make_device 2199 2193 -6 complete_cmd_dir_file 773 767 -6 run_applet_and_exit 715 708 -7 uudecode_main 321 313 -8 pwdx_main 197 189 -8 execute 568 560 -8 i2cdetect_main 1186 1176 -10 procps_scan 1242 1230 -12 procps_read_smaps 1017 1005 -12 process_module 746 734 -12 patch_main 1903 1891 -12 nfsmount 3572 3560 -12 stack_machine 126 112 -14 process_timer_stats 449 435 -14 match_fstype 111 97 -14 do_ipaddr 1344 1330 -14 open_list_and_close 359 343 -16 get_header_tar 1795 1779 -16 prepend_new_eth_table 340 323 -17 fsck_main 1811 1794 -17 find_iface_state 56 38 -18 dnsd_main 1321 1303 -18 base_device 179 158 -21 find_keyword 104 82 -22 handle_incoming_and_exit 2785 2762 -23 parse_and_put_prompt 774 746 -28 modinfo 347 317 -30 find_action 204 171 -33 update_passwd 1470 1436 -34 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540) Total: -522 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-03-12 22:18:34 +05:30
while (*cp != '/' && *cp != '\0') {
if (!isdigit(*cp))
goto errout;
cp++;
}
libbb: introduce and use is_prefixed_with() function old new delta is_prefixed_with - 18 +18 complete_username 78 77 -1 man_main 737 735 -2 fsck_device 429 427 -2 unpack_ar_archive 80 76 -4 strip_unsafe_prefix 105 101 -4 singlemount 1054 1050 -4 rtc_adjtime_is_utc 90 86 -4 resolve_mount_spec 88 84 -4 parse_one_line 1029 1025 -4 parse_conf 1460 1456 -4 may_wakeup 83 79 -4 loadkmap_main 219 215 -4 get_irqs_from_stat 103 99 -4 get_header_cpio 913 909 -4 findfs_main 79 75 -4 fbsplash_main 1230 1226 -4 load_crontab 776 771 -5 expand_vars_to_list 1151 1146 -5 date_main 881 876 -5 skip_dev_pfx 30 24 -6 make_device 2199 2193 -6 complete_cmd_dir_file 773 767 -6 run_applet_and_exit 715 708 -7 uudecode_main 321 313 -8 pwdx_main 197 189 -8 execute 568 560 -8 i2cdetect_main 1186 1176 -10 procps_scan 1242 1230 -12 procps_read_smaps 1017 1005 -12 process_module 746 734 -12 patch_main 1903 1891 -12 nfsmount 3572 3560 -12 stack_machine 126 112 -14 process_timer_stats 449 435 -14 match_fstype 111 97 -14 do_ipaddr 1344 1330 -14 open_list_and_close 359 343 -16 get_header_tar 1795 1779 -16 prepend_new_eth_table 340 323 -17 fsck_main 1811 1794 -17 find_iface_state 56 38 -18 dnsd_main 1321 1303 -18 base_device 179 158 -21 find_keyword 104 82 -22 handle_incoming_and_exit 2785 2762 -23 parse_and_put_prompt 774 746 -28 modinfo 347 317 -30 find_action 204 171 -33 update_passwd 1470 1436 -34 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540) Total: -522 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-03-12 22:18:34 +05:30
//FIXME: what if *cp = '\0' now? cp++ moves past it!!!
cp++;
}
libbb: introduce and use is_prefixed_with() function old new delta is_prefixed_with - 18 +18 complete_username 78 77 -1 man_main 737 735 -2 fsck_device 429 427 -2 unpack_ar_archive 80 76 -4 strip_unsafe_prefix 105 101 -4 singlemount 1054 1050 -4 rtc_adjtime_is_utc 90 86 -4 resolve_mount_spec 88 84 -4 parse_one_line 1029 1025 -4 parse_conf 1460 1456 -4 may_wakeup 83 79 -4 loadkmap_main 219 215 -4 get_irqs_from_stat 103 99 -4 get_header_cpio 913 909 -4 findfs_main 79 75 -4 fbsplash_main 1230 1226 -4 load_crontab 776 771 -5 expand_vars_to_list 1151 1146 -5 date_main 881 876 -5 skip_dev_pfx 30 24 -6 make_device 2199 2193 -6 complete_cmd_dir_file 773 767 -6 run_applet_and_exit 715 708 -7 uudecode_main 321 313 -8 pwdx_main 197 189 -8 execute 568 560 -8 i2cdetect_main 1186 1176 -10 procps_scan 1242 1230 -12 procps_read_smaps 1017 1005 -12 process_module 746 734 -12 patch_main 1903 1891 -12 nfsmount 3572 3560 -12 stack_machine 126 112 -14 process_timer_stats 449 435 -14 match_fstype 111 97 -14 do_ipaddr 1344 1330 -14 open_list_and_close 359 343 -16 get_header_tar 1795 1779 -16 prepend_new_eth_table 340 323 -17 fsck_main 1811 1794 -17 find_iface_state 56 38 -18 dnsd_main 1321 1303 -18 base_device 179 158 -21 find_keyword 104 82 -22 handle_incoming_and_exit 2785 2762 -23 parse_and_put_prompt 774 746 -28 modinfo 347 317 -30 find_action 204 171 -33 update_passwd 1470 1436 -34 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540) Total: -522 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-03-12 22:18:34 +05:30
cp[-1] = '\0';
return str;
}
/* Now handle devfs /dev/disc or /dev/disk names */
libbb: introduce and use is_prefixed_with() function old new delta is_prefixed_with - 18 +18 complete_username 78 77 -1 man_main 737 735 -2 fsck_device 429 427 -2 unpack_ar_archive 80 76 -4 strip_unsafe_prefix 105 101 -4 singlemount 1054 1050 -4 rtc_adjtime_is_utc 90 86 -4 resolve_mount_spec 88 84 -4 parse_one_line 1029 1025 -4 parse_conf 1460 1456 -4 may_wakeup 83 79 -4 loadkmap_main 219 215 -4 get_irqs_from_stat 103 99 -4 get_header_cpio 913 909 -4 findfs_main 79 75 -4 fbsplash_main 1230 1226 -4 load_crontab 776 771 -5 expand_vars_to_list 1151 1146 -5 date_main 881 876 -5 skip_dev_pfx 30 24 -6 make_device 2199 2193 -6 complete_cmd_dir_file 773 767 -6 run_applet_and_exit 715 708 -7 uudecode_main 321 313 -8 pwdx_main 197 189 -8 execute 568 560 -8 i2cdetect_main 1186 1176 -10 procps_scan 1242 1230 -12 procps_read_smaps 1017 1005 -12 process_module 746 734 -12 patch_main 1903 1891 -12 nfsmount 3572 3560 -12 stack_machine 126 112 -14 process_timer_stats 449 435 -14 match_fstype 111 97 -14 do_ipaddr 1344 1330 -14 open_list_and_close 359 343 -16 get_header_tar 1795 1779 -16 prepend_new_eth_table 340 323 -17 fsck_main 1811 1794 -17 find_iface_state 56 38 -18 dnsd_main 1321 1303 -18 base_device 179 158 -21 find_keyword 104 82 -22 handle_incoming_and_exit 2785 2762 -23 parse_and_put_prompt 774 746 -28 modinfo 347 317 -30 find_action 204 171 -33 update_passwd 1470 1436 -34 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540) Total: -522 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-03-12 22:18:34 +05:30
disk = NULL;
if (is_prefixed_with(cp, "discs/"))
disk = "disc";
libbb: introduce and use is_prefixed_with() function old new delta is_prefixed_with - 18 +18 complete_username 78 77 -1 man_main 737 735 -2 fsck_device 429 427 -2 unpack_ar_archive 80 76 -4 strip_unsafe_prefix 105 101 -4 singlemount 1054 1050 -4 rtc_adjtime_is_utc 90 86 -4 resolve_mount_spec 88 84 -4 parse_one_line 1029 1025 -4 parse_conf 1460 1456 -4 may_wakeup 83 79 -4 loadkmap_main 219 215 -4 get_irqs_from_stat 103 99 -4 get_header_cpio 913 909 -4 findfs_main 79 75 -4 fbsplash_main 1230 1226 -4 load_crontab 776 771 -5 expand_vars_to_list 1151 1146 -5 date_main 881 876 -5 skip_dev_pfx 30 24 -6 make_device 2199 2193 -6 complete_cmd_dir_file 773 767 -6 run_applet_and_exit 715 708 -7 uudecode_main 321 313 -8 pwdx_main 197 189 -8 execute 568 560 -8 i2cdetect_main 1186 1176 -10 procps_scan 1242 1230 -12 procps_read_smaps 1017 1005 -12 process_module 746 734 -12 patch_main 1903 1891 -12 nfsmount 3572 3560 -12 stack_machine 126 112 -14 process_timer_stats 449 435 -14 match_fstype 111 97 -14 do_ipaddr 1344 1330 -14 open_list_and_close 359 343 -16 get_header_tar 1795 1779 -16 prepend_new_eth_table 340 323 -17 fsck_main 1811 1794 -17 find_iface_state 56 38 -18 dnsd_main 1321 1303 -18 base_device 179 158 -21 find_keyword 104 82 -22 handle_incoming_and_exit 2785 2762 -23 parse_and_put_prompt 774 746 -28 modinfo 347 317 -30 find_action 204 171 -33 update_passwd 1470 1436 -34 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540) Total: -522 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-03-12 22:18:34 +05:30
else if (is_prefixed_with(cp, "disks/"))
disk = "disk";
if (disk) {
cp += 6;
libbb: introduce and use is_prefixed_with() function old new delta is_prefixed_with - 18 +18 complete_username 78 77 -1 man_main 737 735 -2 fsck_device 429 427 -2 unpack_ar_archive 80 76 -4 strip_unsafe_prefix 105 101 -4 singlemount 1054 1050 -4 rtc_adjtime_is_utc 90 86 -4 resolve_mount_spec 88 84 -4 parse_one_line 1029 1025 -4 parse_conf 1460 1456 -4 may_wakeup 83 79 -4 loadkmap_main 219 215 -4 get_irqs_from_stat 103 99 -4 get_header_cpio 913 909 -4 findfs_main 79 75 -4 fbsplash_main 1230 1226 -4 load_crontab 776 771 -5 expand_vars_to_list 1151 1146 -5 date_main 881 876 -5 skip_dev_pfx 30 24 -6 make_device 2199 2193 -6 complete_cmd_dir_file 773 767 -6 run_applet_and_exit 715 708 -7 uudecode_main 321 313 -8 pwdx_main 197 189 -8 execute 568 560 -8 i2cdetect_main 1186 1176 -10 procps_scan 1242 1230 -12 procps_read_smaps 1017 1005 -12 process_module 746 734 -12 patch_main 1903 1891 -12 nfsmount 3572 3560 -12 stack_machine 126 112 -14 process_timer_stats 449 435 -14 match_fstype 111 97 -14 do_ipaddr 1344 1330 -14 open_list_and_close 359 343 -16 get_header_tar 1795 1779 -16 prepend_new_eth_table 340 323 -17 fsck_main 1811 1794 -17 find_iface_state 56 38 -18 dnsd_main 1321 1303 -18 base_device 179 158 -21 find_keyword 104 82 -22 handle_incoming_and_exit 2785 2762 -23 parse_and_put_prompt 774 746 -28 modinfo 347 317 -30 find_action 204 171 -33 update_passwd 1470 1436 -34 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540) Total: -522 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-03-12 22:18:34 +05:30
cp = is_prefixed_with(cp, disk);
if (!cp)
goto errout;
libbb: introduce and use is_prefixed_with() function old new delta is_prefixed_with - 18 +18 complete_username 78 77 -1 man_main 737 735 -2 fsck_device 429 427 -2 unpack_ar_archive 80 76 -4 strip_unsafe_prefix 105 101 -4 singlemount 1054 1050 -4 rtc_adjtime_is_utc 90 86 -4 resolve_mount_spec 88 84 -4 parse_one_line 1029 1025 -4 parse_conf 1460 1456 -4 may_wakeup 83 79 -4 loadkmap_main 219 215 -4 get_irqs_from_stat 103 99 -4 get_header_cpio 913 909 -4 findfs_main 79 75 -4 fbsplash_main 1230 1226 -4 load_crontab 776 771 -5 expand_vars_to_list 1151 1146 -5 date_main 881 876 -5 skip_dev_pfx 30 24 -6 make_device 2199 2193 -6 complete_cmd_dir_file 773 767 -6 run_applet_and_exit 715 708 -7 uudecode_main 321 313 -8 pwdx_main 197 189 -8 execute 568 560 -8 i2cdetect_main 1186 1176 -10 procps_scan 1242 1230 -12 procps_read_smaps 1017 1005 -12 process_module 746 734 -12 patch_main 1903 1891 -12 nfsmount 3572 3560 -12 stack_machine 126 112 -14 process_timer_stats 449 435 -14 match_fstype 111 97 -14 do_ipaddr 1344 1330 -14 open_list_and_close 359 343 -16 get_header_tar 1795 1779 -16 prepend_new_eth_table 340 323 -17 fsck_main 1811 1794 -17 find_iface_state 56 38 -18 dnsd_main 1321 1303 -18 base_device 179 158 -21 find_keyword 104 82 -22 handle_incoming_and_exit 2785 2762 -23 parse_and_put_prompt 774 746 -28 modinfo 347 317 -30 find_action 204 171 -33 update_passwd 1470 1436 -34 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540) Total: -522 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-03-12 22:18:34 +05:30
while (*cp != '/' && *cp != '\0') {
if (!isdigit(*cp))
goto errout;
cp++;
}
libbb: introduce and use is_prefixed_with() function old new delta is_prefixed_with - 18 +18 complete_username 78 77 -1 man_main 737 735 -2 fsck_device 429 427 -2 unpack_ar_archive 80 76 -4 strip_unsafe_prefix 105 101 -4 singlemount 1054 1050 -4 rtc_adjtime_is_utc 90 86 -4 resolve_mount_spec 88 84 -4 parse_one_line 1029 1025 -4 parse_conf 1460 1456 -4 may_wakeup 83 79 -4 loadkmap_main 219 215 -4 get_irqs_from_stat 103 99 -4 get_header_cpio 913 909 -4 findfs_main 79 75 -4 fbsplash_main 1230 1226 -4 load_crontab 776 771 -5 expand_vars_to_list 1151 1146 -5 date_main 881 876 -5 skip_dev_pfx 30 24 -6 make_device 2199 2193 -6 complete_cmd_dir_file 773 767 -6 run_applet_and_exit 715 708 -7 uudecode_main 321 313 -8 pwdx_main 197 189 -8 execute 568 560 -8 i2cdetect_main 1186 1176 -10 procps_scan 1242 1230 -12 procps_read_smaps 1017 1005 -12 process_module 746 734 -12 patch_main 1903 1891 -12 nfsmount 3572 3560 -12 stack_machine 126 112 -14 process_timer_stats 449 435 -14 match_fstype 111 97 -14 do_ipaddr 1344 1330 -14 open_list_and_close 359 343 -16 get_header_tar 1795 1779 -16 prepend_new_eth_table 340 323 -17 fsck_main 1811 1794 -17 find_iface_state 56 38 -18 dnsd_main 1321 1303 -18 base_device 179 158 -21 find_keyword 104 82 -22 handle_incoming_and_exit 2785 2762 -23 parse_and_put_prompt 774 746 -28 modinfo 347 317 -30 find_action 204 171 -33 update_passwd 1470 1436 -34 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540) Total: -522 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-03-12 22:18:34 +05:30
*cp = '\0';
return str;
}
#endif
errout:
free(str);
return NULL;
}
static void free_instance(struct fsck_instance *p)
{
free(p->prog);
free(p->device);
free(p->base_device);
free(p);
}
static struct fs_info *create_fs_device(const char *device, const char *mntpnt,
const char *type, const char *opts,
int passno)
{
struct fs_info *fs;
fs = xzalloc(sizeof(*fs));
fs->device = xstrdup(device);
fs->mountpt = xstrdup(mntpnt);
if (strchr(type, ','))
type = (char *)"auto";
fs->type = xstrdup(type);
fs->opts = xstrdup(opts ? opts : "");
fs->passno = passno < 0 ? 1 : passno;
/*fs->flags = 0; */
/*fs->next = NULL; */
if (!G.filesys_info)
G.filesys_info = fs;
else
G.filesys_last->next = fs;
G.filesys_last = fs;
return fs;
}
/* Load the filesystem database from /etc/fstab */
static void load_fs_info(const char *filename)
{
FILE *fstab;
struct mntent mte;
char buf[1024];
fstab = setmntent(filename, "r");
if (!fstab) {
bb_perror_msg("can't read '%s'", filename);
return;
}
// Loop through entries
while (getmntent_r(fstab, &mte, buf, sizeof(buf))) {
//bb_error_msg("CREATE[%s][%s][%s][%s][%d]", mte.mnt_fsname, mte.mnt_dir,
2008-09-25 16:09:10 +05:30
// mte.mnt_type, mte.mnt_opts,
// mte.mnt_passno);
create_fs_device(mte.mnt_fsname, mte.mnt_dir,
2008-09-25 16:09:10 +05:30
mte.mnt_type, mte.mnt_opts,
mte.mnt_passno);
}
endmntent(fstab);
}
/* Lookup filesys in /etc/fstab and return the corresponding entry. */
static struct fs_info *lookup(char *filesys)
{
struct fs_info *fs;
for (fs = G.filesys_info; fs; fs = fs->next) {
if (strcmp(filesys, fs->device) == 0
|| (fs->mountpt && strcmp(filesys, fs->mountpt) == 0)
)
break;
}
return fs;
}
#if DO_PROGRESS_INDICATOR
static int progress_active(void)
{
struct fsck_instance *inst;
for (inst = G.instance_list; inst; inst = inst->next) {
if (inst->flags & FLAG_DONE)
continue;
if (inst->flags & FLAG_PROGRESS)
return 1;
}
return 0;
}
#endif
/*
* Send a signal to all outstanding fsck child processes
*/
static void kill_all_if_got_signal(void)
{
struct fsck_instance *inst;
2006-12-26 08:21:29 +05:30
if (!bb_got_signal || G.kill_sent)
2006-12-26 08:21:29 +05:30
return;
for (inst = G.instance_list; inst; inst = inst->next) {
if (inst->flags & FLAG_DONE)
continue;
2006-12-26 08:21:29 +05:30
kill(inst->pid, SIGTERM);
}
G.kill_sent = 1;
}
/*
* Wait for one child process to exit; when it does, unlink it from
* the list of executing child processes, free, and return its exit status.
* If there is no exited child, return -1.
*/
static int wait_one(int flags)
{
int status;
int exitcode;
struct fsck_instance *inst, *prev;
pid_t pid;
if (!G.instance_list)
return -1;
/* if (G.noexecute) { already returned -1; } */
while (1) {
pid = waitpid(-1, &status, flags);
kill_all_if_got_signal();
if (pid == 0) /* flags == WNOHANG and no children exited */
return -1;
if (pid < 0) {
if (errno == EINTR)
continue;
if (errno == ECHILD) { /* paranoia */
libbb: reduce the overhead of single parameter bb_error_msg() calls Back in 2007, commit 0c97c9d43707 ("'simple' error message functions by Loic Grenie") introduced bb_simple_perror_msg() to allow for a lower overhead call to bb_perror_msg() when only a string was being printed with no parameters. This saves space for some CPU architectures because it avoids the overhead of a call to a variadic function. However there has never been a simple version of bb_error_msg(), and since 2007 many new calls to bb_perror_msg() have been added that only take a single parameter and so could have been using bb_simple_perror_message(). This changeset introduces 'simple' versions of bb_info_msg(), bb_error_msg(), bb_error_msg_and_die(), bb_herror_msg() and bb_herror_msg_and_die(), and replaces all calls that only take a single parameter, or use something like ("%s", arg), with calls to the corresponding 'simple' version. Since it is likely that single parameter calls to the variadic functions may be accidentally reintroduced in the future a new debugging config option WARN_SIMPLE_MSG has been introduced. This uses some macro magic which will cause any such calls to generate a warning, but this is turned off by default to avoid use of the unpleasant macros in normal circumstances. This is a large changeset due to the number of calls that have been replaced. The only files that contain changes other than simple substitution of function calls are libbb.h, libbb/herror_msg.c, libbb/verror_msg.c and libbb/xfuncs_printf.c. In miscutils/devfsd.c, networking/udhcp/common.h and util-linux/mdev.c additonal macros have been added for logging so that single parameter and multiple parameter logging variants exist. The amount of space saved varies considerably by architecture, and was found to be as follows (for 'defconfig' using GCC 7.4): Arm: -92 bytes MIPS: -52 bytes PPC: -1836 bytes x86_64: -938 bytes Note that for the MIPS architecture only an exception had to be made disabling the 'simple' calls for 'udhcp' (in networking/udhcp/common.h) because it made these files larger on MIPS. Signed-off-by: James Byrne <james.byrne@origamienergy.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2019-07-02 15:05:03 +05:30
bb_simple_error_msg("wait: no more children");
return -1;
}
libbb: reduce the overhead of single parameter bb_error_msg() calls Back in 2007, commit 0c97c9d43707 ("'simple' error message functions by Loic Grenie") introduced bb_simple_perror_msg() to allow for a lower overhead call to bb_perror_msg() when only a string was being printed with no parameters. This saves space for some CPU architectures because it avoids the overhead of a call to a variadic function. However there has never been a simple version of bb_error_msg(), and since 2007 many new calls to bb_perror_msg() have been added that only take a single parameter and so could have been using bb_simple_perror_message(). This changeset introduces 'simple' versions of bb_info_msg(), bb_error_msg(), bb_error_msg_and_die(), bb_herror_msg() and bb_herror_msg_and_die(), and replaces all calls that only take a single parameter, or use something like ("%s", arg), with calls to the corresponding 'simple' version. Since it is likely that single parameter calls to the variadic functions may be accidentally reintroduced in the future a new debugging config option WARN_SIMPLE_MSG has been introduced. This uses some macro magic which will cause any such calls to generate a warning, but this is turned off by default to avoid use of the unpleasant macros in normal circumstances. This is a large changeset due to the number of calls that have been replaced. The only files that contain changes other than simple substitution of function calls are libbb.h, libbb/herror_msg.c, libbb/verror_msg.c and libbb/xfuncs_printf.c. In miscutils/devfsd.c, networking/udhcp/common.h and util-linux/mdev.c additonal macros have been added for logging so that single parameter and multiple parameter logging variants exist. The amount of space saved varies considerably by architecture, and was found to be as follows (for 'defconfig' using GCC 7.4): Arm: -92 bytes MIPS: -52 bytes PPC: -1836 bytes x86_64: -938 bytes Note that for the MIPS architecture only an exception had to be made disabling the 'simple' calls for 'udhcp' (in networking/udhcp/common.h) because it made these files larger on MIPS. Signed-off-by: James Byrne <james.byrne@origamienergy.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2019-07-02 15:05:03 +05:30
bb_simple_perror_msg("wait");
continue;
}
prev = NULL;
inst = G.instance_list;
do {
if (inst->pid == pid)
goto child_died;
prev = inst;
inst = inst->next;
} while (inst);
}
child_died:
exitcode = WEXITSTATUS(status);
if (WIFSIGNALED(status)) {
unsigned sig;
sig = WTERMSIG(status);
exitcode = EXIT_UNCORRECTED;
if (sig != SIGINT) {
printf("Warning: %s %s terminated "
"by signal %u\n",
inst->prog, inst->device, sig);
exitcode = EXIT_ERROR;
}
}
#if DO_PROGRESS_INDICATOR
2007-01-19 07:31:19 +05:30
if (progress && (inst->flags & FLAG_PROGRESS) && !progress_active()) {
struct fsck_instance *inst2;
for (inst2 = G.instance_list; inst2; inst2 = inst2->next) {
if (inst2->flags & FLAG_DONE)
continue;
if (strcmp(inst2->type, "ext2") != 0
&& strcmp(inst2->type, "ext3") != 0
) {
continue;
}
/* ext[23], we will send USR1
* (request to start displaying progress bar)
*
* If we've just started the fsck, wait a tiny
* bit before sending the kill, to give it
* time to set up the signal handler
*/
if (inst2->start_time >= time(NULL) - 1)
sleep1();
kill(inst2->pid, SIGUSR1);
inst2->flags |= FLAG_PROGRESS;
break;
}
}
#endif
if (prev)
prev->next = inst->next;
else
G.instance_list = inst->next;
if (G.verbose > 1)
printf("Finished with %s (exit status %u)\n",
inst->device, exitcode);
G.num_running--;
free_instance(inst);
return exitcode;
}
/*
* Wait until all executing child processes have exited; return the
* logical OR of all of their exit code values.
*/
#define FLAG_WAIT_ALL 0
#define FLAG_WAIT_ATLEAST_ONE WNOHANG
static int wait_many(int flags)
{
int exit_status;
int global_status = 0;
int wait_flags = 0;
while ((exit_status = wait_one(wait_flags)) != -1) {
global_status |= exit_status;
wait_flags |= flags;
}
return global_status;
}
/*
* Execute a particular fsck program, and link it into the list of
* child processes we are waiting for.
*/
static void execute(const char *type, const char *device,
const char *mntpt /*, int interactive */)
{
int i;
struct fsck_instance *inst;
pid_t pid;
G.args[0] = xasprintf("fsck.%s", type);
#if DO_PROGRESS_INDICATOR
if (progress && !progress_active()) {
if (strcmp(type, "ext2") == 0
|| strcmp(type, "ext3") == 0
) {
G.args[XXX] = xasprintf("-C%d", progress_fd); /* 1 */
inst->flags |= FLAG_PROGRESS;
}
}
#endif
G.args[G.num_args - 2] = (char*)device;
/* G.args[G.num_args - 1] = NULL; - already is */
if (G.verbose || G.noexecute) {
printf("[%s (%d) -- %s]", G.args[0], G.num_running,
mntpt ? mntpt : device);
for (i = 0; G.args[i]; i++)
printf(" %s", G.args[i]);
bb_putchar('\n');
}
/* Fork and execute the correct program. */
pid = -1;
if (!G.noexecute) {
pid = spawn(G.args);
if (pid < 0)
bb_simple_perror_msg(G.args[0]);
}
#if DO_PROGRESS_INDICATOR
free(G.args[XXX]);
#endif
/* No child, so don't record an instance */
if (pid <= 0) {
free(G.args[0]);
return;
}
inst = xzalloc(sizeof(*inst));
inst->pid = pid;
inst->prog = G.args[0];
inst->device = xstrdup(device);
inst->base_device = base_device(device);
#if DO_PROGRESS_INDICATOR
inst->start_time = time(NULL);
#endif
/* Add to the list of running fsck's.
* (was adding to the end, but adding to the front is simpler...) */
inst->next = G.instance_list;
G.instance_list = inst;
}
/*
* Run the fsck program on a particular device
*
* If the type is specified using -t, and it isn't prefixed with "no"
* (as in "noext2") and only one filesystem type is specified, then
* use that type regardless of what is specified in /etc/fstab.
*
* If the type isn't specified by the user, then use either the type
* specified in /etc/fstab, or "auto".
*/
static void fsck_device(struct fs_info *fs /*, int interactive */)
{
const char *type;
if (strcmp(fs->type, "auto") != 0) {
type = fs->type;
if (G.verbose > 2)
printf("using filesystem type '%s' %s\n",
type, "from fstab");
} else if (G.fstype
&& (G.fstype[0] != 'n' || G.fstype[1] != 'o') /* != "no" */
&& !is_prefixed_with(G.fstype, "opts=")
&& !is_prefixed_with(G.fstype, "loop")
&& !strchr(G.fstype, ',')
) {
type = G.fstype;
if (G.verbose > 2)
printf("using filesystem type '%s' %s\n",
type, "from -t");
} else {
type = "auto";
if (G.verbose > 2)
printf("using filesystem type '%s' %s\n",
type, "(default)");
}
G.num_running++;
execute(type, fs->device, fs->mountpt /*, interactive */);
}
2007-01-19 07:33:14 +05:30
/*
* Returns TRUE if a partition on the same disk is already being
* checked.
*/
static int device_already_active(char *device)
{
struct fsck_instance *inst;
char *base;
if (G.force_all_parallel)
2007-01-19 07:33:14 +05:30
return 0;
#ifdef BASE_MD
/* Don't check a soft raid disk with any other disk */
if (G.instance_list
&& (is_prefixed_with(G.instance_list->device, BASE_MD)
libbb: introduce and use is_prefixed_with() function old new delta is_prefixed_with - 18 +18 complete_username 78 77 -1 man_main 737 735 -2 fsck_device 429 427 -2 unpack_ar_archive 80 76 -4 strip_unsafe_prefix 105 101 -4 singlemount 1054 1050 -4 rtc_adjtime_is_utc 90 86 -4 resolve_mount_spec 88 84 -4 parse_one_line 1029 1025 -4 parse_conf 1460 1456 -4 may_wakeup 83 79 -4 loadkmap_main 219 215 -4 get_irqs_from_stat 103 99 -4 get_header_cpio 913 909 -4 findfs_main 79 75 -4 fbsplash_main 1230 1226 -4 load_crontab 776 771 -5 expand_vars_to_list 1151 1146 -5 date_main 881 876 -5 skip_dev_pfx 30 24 -6 make_device 2199 2193 -6 complete_cmd_dir_file 773 767 -6 run_applet_and_exit 715 708 -7 uudecode_main 321 313 -8 pwdx_main 197 189 -8 execute 568 560 -8 i2cdetect_main 1186 1176 -10 procps_scan 1242 1230 -12 procps_read_smaps 1017 1005 -12 process_module 746 734 -12 patch_main 1903 1891 -12 nfsmount 3572 3560 -12 stack_machine 126 112 -14 process_timer_stats 449 435 -14 match_fstype 111 97 -14 do_ipaddr 1344 1330 -14 open_list_and_close 359 343 -16 get_header_tar 1795 1779 -16 prepend_new_eth_table 340 323 -17 fsck_main 1811 1794 -17 find_iface_state 56 38 -18 dnsd_main 1321 1303 -18 base_device 179 158 -21 find_keyword 104 82 -22 handle_incoming_and_exit 2785 2762 -23 parse_and_put_prompt 774 746 -28 modinfo 347 317 -30 find_action 204 171 -33 update_passwd 1470 1436 -34 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540) Total: -522 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-03-12 22:18:34 +05:30
|| is_prefixed_with(device, BASE_MD))
2007-01-19 07:33:14 +05:30
) {
return 1;
}
#endif
base = base_device(device);
/*
* If we don't know the base device, assume that the device is
* already active if there are any fsck instances running.
*/
if (!base)
return (G.instance_list != NULL);
2007-01-19 07:33:14 +05:30
for (inst = G.instance_list; inst; inst = inst->next) {
if (!inst->base_device || strcmp(base, inst->base_device) == 0) {
2007-01-19 07:33:14 +05:30
free(base);
return 1;
}
}
free(base);
return 0;
}
/*
* This function returns true if a particular option appears in a
* comma-delimited options list
*/
static int opt_in_list(char *opt, char *optlist)
{
2007-01-19 07:33:14 +05:30
char *s;
int len;
if (!optlist)
return 0;
2007-01-19 07:33:14 +05:30
len = strlen(opt);
s = optlist - 1;
while (1) {
s = strstr(s + 1, opt);
if (!s)
return 0;
/* neither "opt.." nor "xxx,opt.."? */
if (s != optlist && s[-1] != ',')
continue;
/* neither "..opt" nor "..opt,xxx"? */
if (s[len] != '\0' && s[len] != ',')
continue;
return 1;
}
}
/* See if the filesystem matches the criteria given by the -t option */
static int fs_match(struct fs_info *fs)
{
2007-01-19 07:33:14 +05:30
int n, ret, checked_type;
char *cp;
if (!G.fs_type_list)
return 1;
2007-01-19 07:33:14 +05:30
ret = 0;
checked_type = 0;
n = 0;
while (1) {
cp = G.fs_type_list[n];
2007-01-19 07:33:14 +05:30
if (!cp)
break;
switch (G.fs_type_flag[n]) {
case FS_TYPE_FLAG_NORMAL:
checked_type++;
if (strcmp(cp, fs->type) == 0)
ret = 1;
break;
case FS_TYPE_FLAG_NEGOPT:
if (opt_in_list(cp, fs->opts))
return 0;
break;
case FS_TYPE_FLAG_OPT:
if (!opt_in_list(cp, fs->opts))
return 0;
break;
}
2007-01-19 07:33:14 +05:30
n++;
}
if (checked_type == 0)
return 1;
return (G.fs_type_negated ? !ret : ret);
}
/* Check if we should ignore this filesystem. */
static int ignore(struct fs_info *fs)
{
/*
* If the pass number is 0, ignore it.
*/
if (fs->passno == 0)
return 1;
/*
* If a specific fstype is specified, and it doesn't match,
* ignore it.
*/
if (!fs_match(fs))
return 1;
/* Are we ignoring this type? */
if (index_in_strings(ignored_types, fs->type) >= 0)
return 1;
/* We can and want to check this file system type. */
return 0;
}
/* Check all file systems, using the /etc/fstab table. */
static int check_all(void)
{
2007-01-19 07:33:14 +05:30
struct fs_info *fs;
int status = EXIT_OK;
2007-01-19 07:33:14 +05:30
smallint not_done_yet;
smallint pass_done;
int passno;
if (G.verbose)
puts("Checking all filesystems");
/*
* Do an initial scan over the filesystem; mark filesystems
* which should be ignored as done, and resolve any "auto"
* filesystem types (done as a side-effect of calling ignore()).
*/
for (fs = G.filesys_info; fs; fs = fs->next)
if (ignore(fs))
fs->flags |= FLAG_DONE;
/*
* Find and check the root filesystem.
*/
if (!G.parallel_root) {
for (fs = G.filesys_info; fs; fs = fs->next) {
if (LONE_CHAR(fs->mountpt, '/')) {
if (!G.skip_root && !ignore(fs)) {
fsck_device(fs /*, 1*/);
status |= wait_many(FLAG_WAIT_ALL);
if (status > EXIT_NONDESTRUCT)
return status;
}
fs->flags |= FLAG_DONE;
break;
}
}
}
/*
* This is for the bone-headed user who has root
* filesystem listed twice.
* "Skip root" will skip _all_ root entries.
*/
if (G.skip_root)
for (fs = G.filesys_info; fs; fs = fs->next)
if (LONE_CHAR(fs->mountpt, '/'))
fs->flags |= FLAG_DONE;
2007-01-19 07:33:14 +05:30
not_done_yet = 1;
passno = 1;
while (not_done_yet) {
not_done_yet = 0;
pass_done = 1;
for (fs = G.filesys_info; fs; fs = fs->next) {
if (bb_got_signal)
break;
if (fs->flags & FLAG_DONE)
continue;
/*
* If the filesystem's pass number is higher
* than the current pass number, then we didn't
* do it yet.
*/
if (fs->passno > passno) {
2007-01-19 07:33:14 +05:30
not_done_yet = 1;
continue;
}
/*
* If a filesystem on a particular device has
* already been spawned, then we need to defer
* this to another pass.
*/
if (device_already_active(fs->device)) {
pass_done = 0;
continue;
}
/*
* Spawn off the fsck process
*/
fsck_device(fs /*, G.serialize*/);
fs->flags |= FLAG_DONE;
/*
* Only do one filesystem at a time, or if we
* have a limit on the number of fsck's extant
* at one time, apply that limit.
*/
if (G.serialize
|| (G.num_running >= G.max_running)
) {
pass_done = 0;
break;
}
}
if (bb_got_signal)
break;
if (G.verbose > 1)
printf("--waiting-- (pass %d)\n", passno);
status |= wait_many(pass_done ? FLAG_WAIT_ALL :
FLAG_WAIT_ATLEAST_ONE);
if (pass_done) {
if (G.verbose > 1)
puts("----------------------------------");
passno++;
} else
2007-01-19 07:33:14 +05:30
not_done_yet = 1;
}
kill_all_if_got_signal();
status |= wait_many(FLAG_WAIT_ATLEAST_ONE);
return status;
}
/*
* Deal with the fsck -t argument.
* Huh, for mount "-t novfat,nfs" means "neither vfat nor nfs"!
* Why here we require "-t novfat,nonfs" ??
*/
static void compile_fs_type(char *fs_type)
{
char *s;
int num = 2;
smallint negate;
s = fs_type;
while ((s = strchr(s, ','))) {
num++;
s++;
}
G.fs_type_list = xzalloc(num * sizeof(G.fs_type_list[0]));
G.fs_type_flag = xzalloc(num * sizeof(G.fs_type_flag[0]));
G.fs_type_negated = -1; /* not yet known is it negated or not */
num = 0;
s = fs_type;
while (1) {
char *comma;
negate = 0;
if (s[0] == 'n' && s[1] == 'o') { /* "no.." */
s += 2;
negate = 1;
} else if (s[0] == '!') {
s++;
negate = 1;
}
2007-01-19 07:33:14 +05:30
if (strcmp(s, "loop") == 0)
/* loop is really short-hand for opts=loop */
goto loop_special_case;
libbb: introduce and use is_prefixed_with() function old new delta is_prefixed_with - 18 +18 complete_username 78 77 -1 man_main 737 735 -2 fsck_device 429 427 -2 unpack_ar_archive 80 76 -4 strip_unsafe_prefix 105 101 -4 singlemount 1054 1050 -4 rtc_adjtime_is_utc 90 86 -4 resolve_mount_spec 88 84 -4 parse_one_line 1029 1025 -4 parse_conf 1460 1456 -4 may_wakeup 83 79 -4 loadkmap_main 219 215 -4 get_irqs_from_stat 103 99 -4 get_header_cpio 913 909 -4 findfs_main 79 75 -4 fbsplash_main 1230 1226 -4 load_crontab 776 771 -5 expand_vars_to_list 1151 1146 -5 date_main 881 876 -5 skip_dev_pfx 30 24 -6 make_device 2199 2193 -6 complete_cmd_dir_file 773 767 -6 run_applet_and_exit 715 708 -7 uudecode_main 321 313 -8 pwdx_main 197 189 -8 execute 568 560 -8 i2cdetect_main 1186 1176 -10 procps_scan 1242 1230 -12 procps_read_smaps 1017 1005 -12 process_module 746 734 -12 patch_main 1903 1891 -12 nfsmount 3572 3560 -12 stack_machine 126 112 -14 process_timer_stats 449 435 -14 match_fstype 111 97 -14 do_ipaddr 1344 1330 -14 open_list_and_close 359 343 -16 get_header_tar 1795 1779 -16 prepend_new_eth_table 340 323 -17 fsck_main 1811 1794 -17 find_iface_state 56 38 -18 dnsd_main 1321 1303 -18 base_device 179 158 -21 find_keyword 104 82 -22 handle_incoming_and_exit 2785 2762 -23 parse_and_put_prompt 774 746 -28 modinfo 347 317 -30 find_action 204 171 -33 update_passwd 1470 1436 -34 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540) Total: -522 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-03-12 22:18:34 +05:30
if (is_prefixed_with(s, "opts=")) {
s += 5;
loop_special_case:
G.fs_type_flag[num] = negate ? FS_TYPE_FLAG_NEGOPT : FS_TYPE_FLAG_OPT;
} else {
if (G.fs_type_negated == -1)
G.fs_type_negated = negate;
if (G.fs_type_negated != negate)
libbb: reduce the overhead of single parameter bb_error_msg() calls Back in 2007, commit 0c97c9d43707 ("'simple' error message functions by Loic Grenie") introduced bb_simple_perror_msg() to allow for a lower overhead call to bb_perror_msg() when only a string was being printed with no parameters. This saves space for some CPU architectures because it avoids the overhead of a call to a variadic function. However there has never been a simple version of bb_error_msg(), and since 2007 many new calls to bb_perror_msg() have been added that only take a single parameter and so could have been using bb_simple_perror_message(). This changeset introduces 'simple' versions of bb_info_msg(), bb_error_msg(), bb_error_msg_and_die(), bb_herror_msg() and bb_herror_msg_and_die(), and replaces all calls that only take a single parameter, or use something like ("%s", arg), with calls to the corresponding 'simple' version. Since it is likely that single parameter calls to the variadic functions may be accidentally reintroduced in the future a new debugging config option WARN_SIMPLE_MSG has been introduced. This uses some macro magic which will cause any such calls to generate a warning, but this is turned off by default to avoid use of the unpleasant macros in normal circumstances. This is a large changeset due to the number of calls that have been replaced. The only files that contain changes other than simple substitution of function calls are libbb.h, libbb/herror_msg.c, libbb/verror_msg.c and libbb/xfuncs_printf.c. In miscutils/devfsd.c, networking/udhcp/common.h and util-linux/mdev.c additonal macros have been added for logging so that single parameter and multiple parameter logging variants exist. The amount of space saved varies considerably by architecture, and was found to be as follows (for 'defconfig' using GCC 7.4): Arm: -92 bytes MIPS: -52 bytes PPC: -1836 bytes x86_64: -938 bytes Note that for the MIPS architecture only an exception had to be made disabling the 'simple' calls for 'udhcp' (in networking/udhcp/common.h) because it made these files larger on MIPS. Signed-off-by: James Byrne <james.byrne@origamienergy.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2019-07-02 15:05:03 +05:30
bb_simple_error_msg_and_die(
"either all or none of the filesystem types passed to -t must be prefixed "
"with 'no' or '!'");
}
comma = strchrnul(s, ',');
G.fs_type_list[num++] = xstrndup(s, comma-s);
if (*comma == '\0')
break;
s = comma + 1;
}
}
static char **new_args(void)
{
G.args = xrealloc_vector(G.args, 2, G.num_args);
return &G.args[G.num_args++];
}
int fsck_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int fsck_main(int argc UNUSED_PARAM, char **argv)
{
int i, status;
/*int interactive;*/
struct fs_info *fs;
const char *fstab;
char *tmp;
char **devices;
int num_devices;
smallint opts_for_fsck;
smallint doall;
smallint notitle;
INIT_G();
/* we want wait() to be interruptible */
signal_no_SA_RESTART_empty_mask(SIGINT, record_signo);
signal_no_SA_RESTART_empty_mask(SIGTERM, record_signo);
setbuf(stdout, NULL);
opts_for_fsck = doall = notitle = 0;
devices = NULL;
num_devices = 0;
new_args(); /* G.args[0] = NULL, will be replaced by fsck.<type> */
/* G.instance_list = NULL; - in bss, so already zeroed */
while (*++argv) {
int j;
int optpos;
char *options;
char *arg = *argv;
/* "/dev/blk" or "/path" or "UUID=xxx" or "LABEL=xxx" */
if ((arg[0] == '/' && !opts_for_fsck) || strchr(arg, '=')) {
// FIXME: must check that arg is a blkdev, or resolve
// "/path", "UUID=xxx" or "LABEL=xxx" into block device name
// ("UUID=xxx"/"LABEL=xxx" can probably shifted to fsck.auto duties)
devices = xrealloc_vector(devices, 2, num_devices);
devices[num_devices++] = arg;
continue;
}
if (arg[0] != '-' || opts_for_fsck) {
*new_args() = arg;
continue;
}
if (LONE_CHAR(arg + 1, '-')) { /* "--" ? */
opts_for_fsck = 1;
continue;
}
optpos = 0;
options = NULL;
for (j = 1; arg[j]; j++) {
switch (arg[j]) {
case 'A':
2007-01-19 07:31:19 +05:30
doall = 1;
break;
#if DO_PROGRESS_INDICATOR
case 'C':
2007-01-19 07:31:19 +05:30
progress = 1;
if (arg[++j]) { /* -Cn */
progress_fd = xatoi_positive(&arg[j]);
goto next_arg;
}
/* -C n */
if (!*++argv)
bb_show_usage();
progress_fd = xatoi_positive(*argv);
goto next_arg;
#endif
case 'V':
G.verbose++;
break;
case 'N':
G.noexecute = 1;
break;
case 'R':
G.skip_root = 1;
break;
case 'T':
2007-01-19 07:31:19 +05:30
notitle = 1;
break;
2007-01-19 07:31:19 +05:30
/* case 'M':
like_mount = 1;
break; */
case 'P':
G.parallel_root = 1;
break;
case 's':
G.serialize = 1;
break;
case 't':
if (G.fstype)
bb_show_usage();
if (arg[++j])
tmp = &arg[j];
else if (*++argv)
tmp = *argv;
else
bb_show_usage();
G.fstype = xstrdup(tmp);
compile_fs_type(G.fstype);
goto next_arg;
case '?':
bb_show_usage();
break;
default:
optpos++;
/* one extra for '\0' */
options = xrealloc(options, optpos + 2);
options[optpos] = arg[j];
break;
}
}
next_arg:
if (optpos) {
options[0] = '-';
options[optpos + 1] = '\0';
*new_args() = options;
}
}
if (getenv("FSCK_FORCE_ALL_PARALLEL"))
G.force_all_parallel = 1;
tmp = getenv("FSCK_MAX_INST");
G.max_running = INT_MAX;
if (tmp)
G.max_running = xatoi(tmp);
new_args(); /* G.args[G.num_args - 2] will be replaced by <device> */
new_args(); /* G.args[G.num_args - 1] is the last, NULL element */
if (!notitle)
puts("fsck (busybox "BB_VER")");
/* Even plain "fsck /dev/hda1" needs fstab to get fs type,
* so we are scanning it anyway */
fstab = getenv("FSTAB_FILE");
if (!fstab)
fstab = "/etc/fstab";
load_fs_info(fstab);
/*interactive = (num_devices == 1) | G.serialize;*/
if (num_devices == 0)
/*interactive =*/ G.serialize = doall = 1;
if (doall)
return check_all();
status = 0;
2006-12-26 08:21:29 +05:30
for (i = 0; i < num_devices; i++) {
if (bb_got_signal) {
kill_all_if_got_signal();
break;
}
fs = lookup(devices[i]);
if (!fs)
fs = create_fs_device(devices[i], "", "auto", NULL, -1);
fsck_device(fs /*, interactive */);
if (G.serialize
|| (G.num_running >= G.max_running)
) {
int exit_status = wait_one(0);
if (exit_status >= 0)
status |= exit_status;
if (G.verbose > 1)
puts("----------------------------------");
}
}
status |= wait_many(FLAG_WAIT_ALL);
return status;
}