From a6691317e5ce1600a587ba518a29b5716732597a Mon Sep 17 00:00:00 2001 From: Denis Vlasenko Date: Wed, 13 Jun 2007 12:28:21 +0000 Subject: fsck_minix: stop using data/bss 10847 8 271 11126 2b76 busybox.t2/util-linux/fsck_minix.o 10140 0 0 10140 279c busybox.t3/util-linux/fsck_minix.o --- util-linux/fsck_minix.c | 253 +++++++++++++++++++++++++----------------------- 1 file changed, 130 insertions(+), 123 deletions(-) (limited to 'util-linux/fsck_minix.c') diff --git a/util-linux/fsck_minix.c b/util-linux/fsck_minix.c index 74cccf671..795a5493c 100644 --- a/util-linux/fsck_minix.c +++ b/util-linux/fsck_minix.c @@ -87,62 +87,120 @@ * enforced (but it's not much fun on a character device :-). */ -#include "libbb.h" #include - +#include "libbb.h" #include "minix.h" #ifndef BLKGETSIZE #define BLKGETSIZE _IO(0x12,96) /* return device size */ #endif -#ifdef UNUSED enum { +#ifdef UNUSED MINIX1_LINK_MAX = 250, MINIX2_LINK_MAX = 65530, MINIX_I_MAP_SLOTS = 8, MINIX_Z_MAP_SLOTS = 64, MINIX_V1 = 0x0001, /* original minix fs */ MINIX_V2 = 0x0002, /* minix V2 fs */ - NAME_MAX = 255, /* # chars in a file name */ -}; #endif + MINIX_NAME_MAX = 255, /* # chars in a file name */ +}; -#if ENABLE_FEATURE_MINIX2 -static smallint version2; -#else +#if !ENABLE_FEATURE_MINIX2 enum { version2 = 0 }; #endif -static smallint repair, automatic, verbose, list, show, warn_mode, force; -static smallint changed; /* is filesystem modified? */ -static smallint errors_uncorrected; /* flag if some error was not corrected */ - -static smallint termios_set; -static struct termios termios; - -static char *device_name; -static int IN; -static int directory, regular, blockdev, chardev, links, symlinks, total; - -//also smallint? -static int dirsize = 16; -static int namelen = 14; - -static char *inode_buffer; +enum { MAX_DEPTH = 32 }; -static struct { +struct globals { + int dev_fd; +#if ENABLE_FEATURE_MINIX2 + smallint version2; +#endif + smallint repair, automatic, verbose, list, show, warn_mode, force; + smallint changed; /* is filesystem modified? */ + smallint errors_uncorrected; /* flag if some error was not corrected */ + smallint termios_set; + smallint dirsize; + smallint namelen; + char *device_name; + int directory, regular, blockdev, chardev, links, symlinks, total; + char *inode_buffer; + + char *inode_map; + char *zone_map; + + unsigned char *inode_count; + unsigned char *zone_count; + + /* File-name data */ + int name_depth; + char *name_component[MAX_DEPTH+1]; + + /* Bigger stuff */ + struct termios sv_termios; char super_block_buffer[BLOCK_SIZE]; char add_zone_ind_blk[BLOCK_SIZE]; char add_zone_dind_blk[BLOCK_SIZE]; USE_FEATURE_MINIX2(char add_zone_tind_blk[BLOCK_SIZE];) char check_file_blk[BLOCK_SIZE]; -} *blockbuf; + + /* File-name data */ + char current_name[MAX_DEPTH * MINIX_NAME_MAX]; +}; + +#define G (*ptr_to_globals) +#define dev_fd (G.dev_fd ) +#if ENABLE_FEATURE_MINIX2 +#define version2 (G.version2 ) +#endif +#define repair (G.repair ) +#define automatic (G.automatic ) +#define verbose (G.verbose ) +#define list (G.list ) +#define show (G.show ) +#define warn_mode (G.warn_mode ) +#define force (G.force ) +#define changed (G.changed ) +#define errors_uncorrected (G.errors_uncorrected ) +#define termios_set (G.termios_set ) +#define dirsize (G.dirsize ) +#define namelen (G.namelen ) +#define device_name (G.device_name ) +#define directory (G.directory ) +#define regular (G.regular ) +#define blockdev (G.blockdev ) +#define chardev (G.chardev ) +#define links (G.links ) +#define symlinks (G.symlinks ) +#define total (G.total ) +#define inode_buffer (G.inode_buffer ) +#define inode_map (G.inode_map ) +#define zone_map (G.zone_map ) +#define inode_count (G.inode_count ) +#define zone_count (G.zone_count ) +#define name_depth (G.name_depth ) +#define name_component (G.name_component ) +#define sv_termios (G.sv_termios ) +#define super_block_buffer (G.super_block_buffer ) +#define add_zone_ind_blk (G.add_zone_ind_blk ) +#define add_zone_dind_blk (G.add_zone_dind_blk ) +#define add_zone_tind_blk (G.add_zone_tind_blk ) +#define check_file_blk (G.check_file_blk ) +#define current_name (G.current_name ) +#define INIT_G() do { \ + dirsize = 16; \ + namelen = 14; \ + current_name[0] = '/'; \ + /*current_name[1] = '\0';*/ \ + name_component[0] = ¤t_name[0]; \ +} while (0) #define Inode1 (((struct minix1_inode *) inode_buffer)-1) #define Inode2 (((struct minix2_inode *) inode_buffer)-1) -#define Super (*(struct minix_super_block *)(blockbuf->super_block_buffer)) +#define Super (*(struct minix_super_block *)(super_block_buffer)) #if ENABLE_FEATURE_MINIX2 # define ZONES ((unsigned)(version2 ? Super.s_zones : Super.s_nzones)) @@ -173,12 +231,6 @@ static ALWAYS_INLINE unsigned div_roundup(unsigned size, unsigned n) #define INODE_BUFFER_SIZE (INODE_BLOCKS * BLOCK_SIZE) #define NORM_FIRSTZONE (2 + IMAPS + ZMAPS + INODE_BLOCKS) -static char *inode_map; -static char *zone_map; - -static unsigned char *inode_count; -static unsigned char *zone_count; - /* Before you ask "where they come from?": */ /* setbit/clrbit are supplied by sys/param.h */ @@ -205,8 +257,8 @@ static void minix_clrbit(char *a, unsigned i) #define mark_inode(x) (minix_setbit(inode_map,(x))) #define unmark_inode(x) (minix_clrbit(inode_map,(x))) -#define mark_zone(x) (minix_setbit(zone_map,(x)-FIRSTZONE+1)) -#define unmark_zone(x) (minix_clrbit(zone_map,(x)-FIRSTZONE+1)) +#define mark_zone(x) (minix_setbit(zone_map,(x)-FIRSTZONE+1)) +#define unmark_zone(x) (minix_clrbit(zone_map,(x)-FIRSTZONE+1)) static void recursive_check(unsigned ino); @@ -218,35 +270,10 @@ static void die(const char *str) ATTRIBUTE_NORETURN; static void die(const char *str) { if (termios_set) - tcsetattr(0, TCSANOW, &termios); + tcsetattr(0, TCSANOW, &sv_termios); bb_error_msg_and_die("%s", str); } -/* File-name data */ -enum { MAX_DEPTH = 32 }; -static int name_depth; -static char *current_name; -static char *name_component[MAX_DEPTH+1]; - -/* Wed Feb 9 15:17:06 MST 2000 */ -/* dynamically allocate name_list (instead of making it static) */ -static void alloc_current_name(void) -{ - current_name = xmalloc(MAX_DEPTH * (BUFSIZ + 1)); - current_name[0] = '/'; - current_name[1] = '\0'; - name_component[0] = ¤t_name[0]; -} - -#if ENABLE_FEATURE_CLEAN_UP -/* execute this atexit() to deallocate name_list[] */ -/* piptigger was here */ -static void free_current_name(void) -{ - free(current_name); -} -#endif - static void push_filename(const char *name) { // /dir/dir/dir/file @@ -401,12 +428,12 @@ static void read_block(unsigned nr, char *addr) memset(addr, 0, BLOCK_SIZE); return; } - if (BLOCK_SIZE * nr != lseek(IN, BLOCK_SIZE * nr, SEEK_SET)) { + if (BLOCK_SIZE * nr != lseek(dev_fd, BLOCK_SIZE * nr, SEEK_SET)) { printf("%s: cannot seek to block in file '%s'\n", bb_msg_read_error, current_name); errors_uncorrected = 1; memset(addr, 0, BLOCK_SIZE); - } else if (BLOCK_SIZE != read(IN, addr, BLOCK_SIZE)) { + } else if (BLOCK_SIZE != read(dev_fd, addr, BLOCK_SIZE)) { printf("%s: bad block in file '%s'\n", bb_msg_read_error, current_name); errors_uncorrected = 1; @@ -427,9 +454,9 @@ static void write_block(unsigned nr, char *addr) errors_uncorrected = 1; return; } - if (BLOCK_SIZE * nr != lseek(IN, BLOCK_SIZE * nr, SEEK_SET)) + if (BLOCK_SIZE * nr != lseek(dev_fd, BLOCK_SIZE * nr, SEEK_SET)) die("seek failed in write_block"); - if (BLOCK_SIZE != write(IN, addr, BLOCK_SIZE)) { + if (BLOCK_SIZE != write(dev_fd, addr, BLOCK_SIZE)) { printf("%s: bad block in file '%s'\n", bb_msg_write_error, current_name); errors_uncorrected = 1; @@ -547,9 +574,9 @@ static void write_super_block(void) if (!errors_uncorrected) Super.s_state &= ~MINIX_ERROR_FS; - if (BLOCK_SIZE != lseek(IN, BLOCK_SIZE, SEEK_SET)) + if (BLOCK_SIZE != lseek(dev_fd, BLOCK_SIZE, SEEK_SET)) die("seek failed in write_super_block"); - if (BLOCK_SIZE != write(IN, blockbuf->super_block_buffer, BLOCK_SIZE)) + if (BLOCK_SIZE != write(dev_fd, super_block_buffer, BLOCK_SIZE)) die("cannot write super-block"); } @@ -557,11 +584,11 @@ static void write_tables(void) { write_super_block(); - if (IMAPS * BLOCK_SIZE != write(IN, inode_map, IMAPS * BLOCK_SIZE)) + if (IMAPS * BLOCK_SIZE != write(dev_fd, inode_map, IMAPS * BLOCK_SIZE)) die("cannot write inode map"); - if (ZMAPS * BLOCK_SIZE != write(IN, zone_map, ZMAPS * BLOCK_SIZE)) + if (ZMAPS * BLOCK_SIZE != write(dev_fd, zone_map, ZMAPS * BLOCK_SIZE)) die("cannot write zone map"); - if (INODE_BUFFER_SIZE != write(IN, inode_buffer, INODE_BUFFER_SIZE)) + if (INODE_BUFFER_SIZE != write(dev_fd, inode_buffer, INODE_BUFFER_SIZE)) die("cannot write inodes"); } @@ -590,9 +617,9 @@ static void get_dirsize(void) static void read_superblock(void) { - if (BLOCK_SIZE != lseek(IN, BLOCK_SIZE, SEEK_SET)) + if (BLOCK_SIZE != lseek(dev_fd, BLOCK_SIZE, SEEK_SET)) die("seek failed"); - if (BLOCK_SIZE != read(IN, blockbuf->super_block_buffer, BLOCK_SIZE)) + if (BLOCK_SIZE != read(dev_fd, super_block_buffer, BLOCK_SIZE)) die("cannot read super block"); /* already initialized to: namelen = 14; @@ -628,11 +655,11 @@ static void read_tables(void) inode_buffer = xmalloc(INODE_BUFFER_SIZE); inode_count = xmalloc(INODES + 1); zone_count = xmalloc(ZONES); - if (IMAPS * BLOCK_SIZE != read(IN, inode_map, IMAPS * BLOCK_SIZE)) + if (IMAPS * BLOCK_SIZE != read(dev_fd, inode_map, IMAPS * BLOCK_SIZE)) die("cannot read inode map"); - if (ZMAPS * BLOCK_SIZE != read(IN, zone_map, ZMAPS * BLOCK_SIZE)) + if (ZMAPS * BLOCK_SIZE != read(dev_fd, zone_map, ZMAPS * BLOCK_SIZE)) die("cannot read zone map"); - if (INODE_BUFFER_SIZE != read(IN, inode_buffer, INODE_BUFFER_SIZE)) + if (INODE_BUFFER_SIZE != read(dev_fd, inode_buffer, INODE_BUFFER_SIZE)) die("cannot read inodes"); if (NORM_FIRSTZONE != FIRSTZONE) { printf("warning: firstzone!=norm_firstzone\n"); @@ -832,7 +859,6 @@ static int add_zone2(uint32_t *znr, smallint *corrected) static void add_zone_ind(uint16_t *znr, smallint *corrected) { -#define blk (blockbuf->add_zone_ind_blk) int i; int block; smallint chg_blk = 0; @@ -840,18 +866,16 @@ static void add_zone_ind(uint16_t *znr, smallint *corrected) block = add_zone(znr, corrected); if (!block) return; - read_block(block, blk); + read_block(block, add_zone_ind_blk); for (i = 0; i < (BLOCK_SIZE >> 1); i++) - add_zone(i + (uint16_t *) blk, &chg_blk); + add_zone(i + (uint16_t *) add_zone_ind_blk, &chg_blk); if (chg_blk) - write_block(block, blk); -#undef blk + write_block(block, add_zone_ind_blk); } #if ENABLE_FEATURE_MINIX2 static void add_zone_ind2(uint32_t *znr, smallint *corrected) { -#define blk (blockbuf->add_zone_ind_blk) int i; int block; smallint chg_blk = 0; @@ -859,18 +883,16 @@ static void add_zone_ind2(uint32_t *znr, smallint *corrected) block = add_zone2(znr, corrected); if (!block) return; - read_block(block, blk); + read_block(block, add_zone_ind_blk); for (i = 0; i < BLOCK_SIZE >> 2; i++) - add_zone2(i + (uint32_t *) blk, &chg_blk); + add_zone2(i + (uint32_t *) add_zone_ind_blk, &chg_blk); if (chg_blk) - write_block(block, blk); -#undef blk + write_block(block, add_zone_ind_blk); } #endif static void add_zone_dind(uint16_t *znr, smallint *corrected) { -#define blk (blockbuf->add_zone_dind_blk) int i; int block; smallint chg_blk = 0; @@ -878,18 +900,16 @@ static void add_zone_dind(uint16_t *znr, smallint *corrected) block = add_zone(znr, corrected); if (!block) return; - read_block(block, blk); + read_block(block, add_zone_dind_blk); for (i = 0; i < (BLOCK_SIZE >> 1); i++) - add_zone_ind(i + (uint16_t *) blk, &chg_blk); + add_zone_ind(i + (uint16_t *) add_zone_dind_blk, &chg_blk); if (chg_blk) - write_block(block, blk); -#undef blk + write_block(block, add_zone_dind_blk); } #if ENABLE_FEATURE_MINIX2 static void add_zone_dind2(uint32_t *znr, smallint *corrected) { -#define blk (blockbuf->add_zone_dind_blk) int i; int block; smallint chg_blk = 0; @@ -897,17 +917,15 @@ static void add_zone_dind2(uint32_t *znr, smallint *corrected) block = add_zone2(znr, corrected); if (!block) return; - read_block(block, blk); + read_block(block, add_zone_dind_blk); for (i = 0; i < BLOCK_SIZE >> 2; i++) - add_zone_ind2(i + (uint32_t *) blk, &chg_blk); + add_zone_ind2(i + (uint32_t *) add_zone_dind_blk, &chg_blk); if (chg_blk) - write_block(block, blk); -#undef blk + write_block(block, add_zone_dind_blk); } static void add_zone_tind2(uint32_t *znr, smallint *corrected) { -#define blk (blockbuf->add_zone_tind_blk) int i; int block; smallint chg_blk = 0; @@ -915,12 +933,11 @@ static void add_zone_tind2(uint32_t *znr, smallint *corrected) block = add_zone2(znr, corrected); if (!block) return; - read_block(block, blk); + read_block(block, add_zone_tind_blk); for (i = 0; i < BLOCK_SIZE >> 2; i++) - add_zone_dind2(i + (uint32_t *) blk, &chg_blk); + add_zone_dind2(i + (uint32_t *) add_zone_tind_blk, &chg_blk); if (chg_blk) - write_block(block, blk); -#undef blk + write_block(block, add_zone_tind_blk); } #endif @@ -964,22 +981,21 @@ static void check_zones2(unsigned i) static void check_file(struct minix1_inode *dir, unsigned offset) { -#define blk (blockbuf->check_file_blk) struct minix1_inode *inode; int ino; char *name; int block; block = map_block(dir, offset / BLOCK_SIZE); - read_block(block, blk); - name = blk + (offset % BLOCK_SIZE) + 2; + read_block(block, check_file_blk); + name = check_file_blk + (offset % BLOCK_SIZE) + 2; ino = *(uint16_t *) (name - 2); if (ino > INODES) { printf("%s contains a bad inode number for file '%.*s'. ", current_name, namelen, name); if (ask("Remove", 1)) { *(uint16_t *) (name - 2) = 0; - write_block(block, blk); + write_block(block, check_file_blk); } ino = 0; } @@ -1010,28 +1026,26 @@ static void check_file(struct minix1_inode *dir, unsigned offset) if (inode && S_ISDIR(inode->i_mode)) recursive_check(ino); pop_filename(); -#undef blk } #if ENABLE_FEATURE_MINIX2 static void check_file2(struct minix2_inode *dir, unsigned offset) { -#define blk (blockbuf->check_file_blk) struct minix2_inode *inode; int ino; char *name; int block; block = map_block2(dir, offset / BLOCK_SIZE); - read_block(block, blk); - name = blk + (offset % BLOCK_SIZE) + 2; + read_block(block, check_file_blk); + name = check_file_blk + (offset % BLOCK_SIZE) + 2; ino = *(uint16_t *) (name - 2); if (ino > INODES) { printf("%s contains a bad inode number for file '%.*s'. ", current_name, namelen, name); if (ask("Remove", 1)) { *(uint16_t *) (name - 2) = 0; - write_block(block, blk); + write_block(block, check_file_blk); } ino = 0; } @@ -1062,7 +1076,6 @@ static void check_file2(struct minix2_inode *dir, unsigned offset) if (inode && S_ISDIR(inode->i_mode)) recursive_check2(ino); pop_filename(); -#undef blk } #endif @@ -1104,9 +1117,9 @@ static int bad_zone(int i) { char buffer[BLOCK_SIZE]; - if (BLOCK_SIZE * i != lseek(IN, BLOCK_SIZE * i, SEEK_SET)) + if (BLOCK_SIZE * i != lseek(dev_fd, BLOCK_SIZE * i, SEEK_SET)) die("seek failed in bad_zone"); - return (BLOCK_SIZE != read(IN, buffer, BLOCK_SIZE)); + return (BLOCK_SIZE != read(dev_fd, buffer, BLOCK_SIZE)); } static void check_counts(void) @@ -1242,14 +1255,8 @@ int fsck_minix_main(int argc, char **argv) int retcode = 0; xfunc_error_retval = 8; - blockbuf = xzalloc(sizeof(*blockbuf)); - alloc_current_name(); -#if ENABLE_FEATURE_CLEAN_UP - /* Don't bother to free memory. Exit does - * that automagically, so we can save a few bytes */ - atexit(free_current_name); -#endif + INIT_G(); if (INODE_SIZE1 * MINIX1_INODES_PER_BLOCK != BLOCK_SIZE) die("bad inode size"); @@ -1303,7 +1310,7 @@ int fsck_minix_main(int argc, char **argv) if (!isatty(0) || !isatty(1)) die("need terminal for interactive repairs"); } - IN = xopen(device_name, repair ? O_RDWR : O_RDONLY); + dev_fd = xopen(device_name, repair ? O_RDWR : O_RDONLY); /*sync(); paranoia? */ read_superblock(); @@ -1331,8 +1338,8 @@ int fsck_minix_main(int argc, char **argv) read_tables(); if (repair && !automatic) { - tcgetattr(0, &termios); - tmp = termios; + tcgetattr(0, &sv_termios); + tmp = sv_termios; tmp.c_lflag &= ~(ICANON | ECHO); tcsetattr(0, TCSANOW, &tmp); termios_set = 1; @@ -1379,7 +1386,7 @@ int fsck_minix_main(int argc, char **argv) write_super_block(); if (repair && !automatic) - tcsetattr(0, TCSANOW, &termios); + tcsetattr(0, TCSANOW, &sv_termios); if (changed) retcode += 3; -- cgit v1.2.3