Cleanup patch from Vladimir N. Oleynik.
* mkdir: remove 3 lines in source code.
* mkfs_minix: save 32 bytes, remove 4 bugs.
* mkswap: save 64 bytes, remove 1 bug.
This commit is contained in:
Eric Andersen
parent
53cfb7e231
commit
65225df2dc
@ -52,8 +52,7 @@ extern int mkdir_main(int argc, char **argv)
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/* Find the specified modes */
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mode = 0;
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if (parse_mode(*(++argv), &mode) == FALSE) {
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error_msg("Unknown mode: %s\n", *argv);
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return EXIT_FAILURE;
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error_msg_and_die("Unknown mode: %s\n", *argv);
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}
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/* Set the umask for this process so it doesn't
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* screw up whatever the user just entered. */
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@ -81,22 +80,19 @@ extern int mkdir_main(int argc, char **argv)
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char buf[BUFSIZ + 1];
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if (strlen(*argv) > BUFSIZ - 1) {
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error_msg(name_too_long);
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return EXIT_FAILURE;
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error_msg_and_die(name_too_long);
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}
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strcpy(buf, *argv);
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status = stat(buf, &statBuf);
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if (parentFlag == FALSE && status != -1 && errno != ENOENT) {
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error_msg("%s: File exists\n", buf);
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return EXIT_FAILURE;
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error_msg_and_die("%s: File exists\n", buf);
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}
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if (parentFlag == TRUE) {
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strcat(buf, "/");
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create_path(buf, mode);
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} else {
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if (mkdir(buf, mode) != 0 && parentFlag == FALSE) {
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perror(buf);
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return EXIT_FAILURE;
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perror_msg_and_die(buf);
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}
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}
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argc--;
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12
mkdir.c
12
mkdir.c
@ -52,8 +52,7 @@ extern int mkdir_main(int argc, char **argv)
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/* Find the specified modes */
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mode = 0;
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if (parse_mode(*(++argv), &mode) == FALSE) {
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error_msg("Unknown mode: %s\n", *argv);
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return EXIT_FAILURE;
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error_msg_and_die("Unknown mode: %s\n", *argv);
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}
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/* Set the umask for this process so it doesn't
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* screw up whatever the user just entered. */
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@ -81,22 +80,19 @@ extern int mkdir_main(int argc, char **argv)
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char buf[BUFSIZ + 1];
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if (strlen(*argv) > BUFSIZ - 1) {
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error_msg(name_too_long);
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return EXIT_FAILURE;
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error_msg_and_die(name_too_long);
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}
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strcpy(buf, *argv);
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status = stat(buf, &statBuf);
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if (parentFlag == FALSE && status != -1 && errno != ENOENT) {
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error_msg("%s: File exists\n", buf);
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return EXIT_FAILURE;
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error_msg_and_die("%s: File exists\n", buf);
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}
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if (parentFlag == TRUE) {
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strcat(buf, "/");
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create_path(buf, mode);
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} else {
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if (mkdir(buf, mode) != 0 && parentFlag == FALSE) {
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perror(buf);
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return EXIT_FAILURE;
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perror_msg_and_die(buf);
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}
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}
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argc--;
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62
mkfs_minix.c
62
mkfs_minix.c
@ -255,19 +255,7 @@ static inline int bit(char * a,unsigned int i)
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#define mark_zone(x) (setbit(zone_map,(x)-FIRSTZONE+1))
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#define unmark_zone(x) (clrbit(zone_map,(x)-FIRSTZONE+1))
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/*
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* Volatile to let gcc know that this doesn't return. When trying
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* to compile this under minix, volatile gives a warning, as
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* exit() isn't defined as volatile under minix.
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*/
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static volatile void die(char *str)
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{
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error_msg("%s\n", str);
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exit(8);
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}
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static volatile void show_usage() __attribute__ ((noreturn));
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static volatile void show_usage()
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static __attribute__ ((noreturn)) void show_usage()
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{
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usage(mkfs_minix_usage);
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}
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@ -291,7 +279,7 @@ static void check_mount(void)
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if (!mnt)
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return;
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die("%s is mounted; will not make a filesystem here!");
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error_msg_and_die("%s is mounted; will not make a filesystem here!\n", device_name);
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}
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static long valid_offset(int fd, int offset)
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@ -348,28 +336,28 @@ static void write_tables(void)
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Super.s_state &= ~MINIX_ERROR_FS;
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if (lseek(DEV, 0, SEEK_SET))
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die("seek to boot block failed in write_tables");
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error_msg_and_die("seek to boot block failed in write_tables\n");
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if (512 != write(DEV, boot_block_buffer, 512))
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die("unable to clear boot sector");
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error_msg_and_die("unable to clear boot sector\n");
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if (BLOCK_SIZE != lseek(DEV, BLOCK_SIZE, SEEK_SET))
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die("seek failed in write_tables");
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error_msg_and_die("seek failed in write_tables\n");
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if (BLOCK_SIZE != write(DEV, super_block_buffer, BLOCK_SIZE))
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die("unable to write super-block");
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error_msg_and_die("unable to write super-block\n");
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if (IMAPS * BLOCK_SIZE != write(DEV, inode_map, IMAPS * BLOCK_SIZE))
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die("unable to write inode map");
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error_msg_and_die("unable to write inode map\n");
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if (ZMAPS * BLOCK_SIZE != write(DEV, zone_map, ZMAPS * BLOCK_SIZE))
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die("unable to write zone map");
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error_msg_and_die("unable to write zone map\n");
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if (INODE_BUFFER_SIZE != write(DEV, inode_buffer, INODE_BUFFER_SIZE))
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die("unable to write inodes");
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error_msg_and_die("unable to write inodes\n");
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}
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static void write_block(int blk, char *buffer)
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{
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if (blk * BLOCK_SIZE != lseek(DEV, blk * BLOCK_SIZE, SEEK_SET))
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die("seek failed in write_block");
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error_msg_and_die("seek failed in write_block\n");
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if (BLOCK_SIZE != write(DEV, buffer, BLOCK_SIZE))
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die("write failed in write_block");
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error_msg_and_die("write failed in write_block\n");
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}
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static int get_free_block(void)
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@ -377,7 +365,7 @@ static int get_free_block(void)
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int blk;
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if (used_good_blocks + 1 >= MAX_GOOD_BLOCKS)
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die("too many bad blocks");
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error_msg_and_die("too many bad blocks\n");
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if (used_good_blocks)
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blk = good_blocks_table[used_good_blocks - 1] + 1;
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else
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@ -385,7 +373,7 @@ static int get_free_block(void)
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while (blk < ZONES && zone_in_use(blk))
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blk++;
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if (blk >= ZONES)
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die("not enough good blocks");
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error_msg_and_die("not enough good blocks\n");
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good_blocks_table[used_good_blocks] = blk;
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used_good_blocks++;
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return blk;
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@ -451,7 +439,7 @@ static void make_bad_inode(void)
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goto end_bad;
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}
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}
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die("too many bad blocks");
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error_msg_and_die("too many bad blocks\n");
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end_bad:
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if (ind)
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write_block(ind, (char *) ind_block);
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@ -501,7 +489,7 @@ static void make_bad_inode2(void)
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}
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}
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/* Could make triple indirect block here */
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die("too many bad blocks");
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error_msg_and_die("too many bad blocks\n");
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end_bad:
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if (ind)
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write_block(ind, (char *) ind_block);
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@ -602,7 +590,7 @@ static void setup_tables(void)
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* /sbin/mkfs.minix -i 200 test.fs
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* */
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if (i >= 999) {
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die("unable to allocate buffers for maps");
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error_msg_and_die("unable to allocate buffers for maps\n");
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}
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FIRSTZONE = NORM_FIRSTZONE;
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inode_map = xmalloc(IMAPS * BLOCK_SIZE);
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@ -633,7 +621,7 @@ long do_check(char *buffer, int try, unsigned int current_block)
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/* Seek to the correct loc. */
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if (lseek(DEV, current_block * BLOCK_SIZE, SEEK_SET) !=
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current_block * BLOCK_SIZE) {
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die("seek failed during testing of blocks");
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error_msg_and_die("seek failed during testing of blocks\n");
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}
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@ -673,7 +661,7 @@ static void check_blocks(void)
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while (currently_testing < ZONES) {
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if (lseek(DEV, currently_testing * BLOCK_SIZE, SEEK_SET) !=
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currently_testing * BLOCK_SIZE)
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die("seek failed in check_blocks");
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error_msg_and_die("seek failed in check_blocks\n");
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try = TEST_BUFFER_BLOCKS;
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if (currently_testing + try > ZONES)
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try = ZONES - currently_testing;
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@ -682,7 +670,7 @@ static void check_blocks(void)
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if (got == try)
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continue;
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if (currently_testing < FIRSTZONE)
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die("bad blocks before data-area: cannot make fs");
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error_msg_and_die("bad blocks before data-area: cannot make fs\n");
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mark_zone(currently_testing);
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badblocks++;
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currently_testing++;
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@ -702,7 +690,7 @@ char *filename;
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listfile = fopen(filename, "r");
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if (listfile == (FILE *) NULL) {
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die("can't open file of bad blocks");
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error_msg_and_die("can't open file of bad blocks\n");
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}
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while (!feof(listfile)) {
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fscanf(listfile, "%ld\n", &blockno);
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@ -724,10 +712,10 @@ extern int mkfs_minix_main(int argc, char **argv)
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int stopIt=FALSE;
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if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE)
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die("bad inode size");
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error_msg_and_die("bad inode size\n");
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#ifdef BB_FEATURE_MINIX2
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if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE)
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die("bad inode size");
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error_msg_and_die("bad inode size\n");
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#endif
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/* Parse options */
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@ -844,13 +832,13 @@ goodbye:
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strcpy(tmp + 2, ".badblocks");
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DEV = open(device_name, O_RDWR);
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if (DEV < 0)
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die("unable to open %s");
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error_msg_and_die("unable to open %s\n", device_name);
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if (fstat(DEV, &statbuf) < 0)
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die("unable to stat %s");
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error_msg_and_die("unable to stat %s\n", device_name);
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if (!S_ISBLK(statbuf.st_mode))
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check = 0;
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else if (statbuf.st_rdev == 0x0300 || statbuf.st_rdev == 0x0340)
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die("will not try to make filesystem on '%s'");
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error_msg_and_die("will not try to make filesystem on '%s'\n", device_name);
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setup_tables();
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if (check)
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check_blocks();
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24
mkswap.c
24
mkswap.c
@ -173,12 +173,6 @@ static int bit_test_and_clear(unsigned int *addr, unsigned int nr)
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}
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static void die(const char *str)
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{
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error_msg("%s\n", str);
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exit(EXIT_FAILURE);
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}
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static void page_ok(int page)
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{
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if (version == 0)
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@ -191,7 +185,7 @@ static void page_bad(int page)
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bit_test_and_clear(signature_page, page);
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else {
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if (badpages == MAX_BADPAGES)
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die("too many bad pages");
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error_msg_and_die("too many bad pages\n");
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p->badpages[badpages] = page;
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}
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badpages++;
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@ -212,7 +206,7 @@ static void check_blocks(void)
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}
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if (do_seek && lseek(DEV, current_page * pagesize, SEEK_SET) !=
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current_page * pagesize)
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die("seek failed in check_blocks");
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error_msg_and_die("seek failed in check_blocks\n");
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if ((do_seek = (pagesize != read(DEV, buffer, pagesize)))) {
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page_bad(current_page++);
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continue;
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@ -369,7 +363,7 @@ int mkswap_main(int argc, char **argv)
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if (!S_ISBLK(statbuf.st_mode))
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check = 0;
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else if (statbuf.st_rdev == 0x0300 || statbuf.st_rdev == 0x0340)
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die("Will not try to make swapdevice on '%s'");
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error_msg_and_die("Will not try to make swapdevice on '%s'\n", device_name);
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#ifdef __sparc__
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if (!force && version == 0) {
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@ -378,7 +372,7 @@ int mkswap_main(int argc, char **argv)
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unsigned short *q, sum;
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if (read(DEV, buffer, 512) != 512)
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die("fatal: first page unreadable");
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error_msg_and_die("fatal: first page unreadable\n");
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if (buffer[508] == 0xDA && buffer[509] == 0xBE) {
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q = (unsigned short *) (buffer + 510);
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for (sum = 0; q >= (unsigned short *) buffer;)
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@ -397,7 +391,7 @@ int mkswap_main(int argc, char **argv)
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if (version == 0 || check)
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check_blocks();
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if (version == 0 && !bit_test_and_clear(signature_page, 0))
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die("fatal: first page unreadable");
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error_msg_and_die("fatal: first page unreadable\n");
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if (version == 1) {
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p->version = version;
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p->last_page = PAGES - 1;
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@ -406,23 +400,23 @@ int mkswap_main(int argc, char **argv)
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goodpages = PAGES - badpages - 1;
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if (goodpages <= 0)
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die("Unable to set up swap-space: unreadable");
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error_msg_and_die("Unable to set up swap-space: unreadable\n");
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printf("Setting up swapspace version %d, size = %ld bytes\n",
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version, (long) (goodpages * pagesize));
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write_signature((version == 0) ? "SWAP-SPACE" : "SWAPSPACE2");
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offset = ((version == 0) ? 0 : 1024);
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if (lseek(DEV, offset, SEEK_SET) != offset)
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die("unable to rewind swap-device");
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error_msg_and_die("unable to rewind swap-device\n");
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if (write(DEV, (char *) signature_page + offset, pagesize - offset)
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!= pagesize - offset)
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die("unable to write signature page");
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error_msg_and_die("unable to write signature page\n");
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/*
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* A subsequent swapon() will fail if the signature
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* is not actually on disk. (This is a kernel bug.)
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*/
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if (fsync(DEV))
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die("fsync failed");
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error_msg_and_die("fsync failed\n");
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return EXIT_SUCCESS;
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}
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@ -255,19 +255,7 @@ static inline int bit(char * a,unsigned int i)
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#define mark_zone(x) (setbit(zone_map,(x)-FIRSTZONE+1))
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#define unmark_zone(x) (clrbit(zone_map,(x)-FIRSTZONE+1))
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/*
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* Volatile to let gcc know that this doesn't return. When trying
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* to compile this under minix, volatile gives a warning, as
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* exit() isn't defined as volatile under minix.
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*/
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static volatile void die(char *str)
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{
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error_msg("%s\n", str);
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exit(8);
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}
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static volatile void show_usage() __attribute__ ((noreturn));
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static volatile void show_usage()
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static __attribute__ ((noreturn)) void show_usage()
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{
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usage(mkfs_minix_usage);
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}
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@ -291,7 +279,7 @@ static void check_mount(void)
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if (!mnt)
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return;
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die("%s is mounted; will not make a filesystem here!");
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error_msg_and_die("%s is mounted; will not make a filesystem here!\n", device_name);
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}
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static long valid_offset(int fd, int offset)
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@ -348,28 +336,28 @@ static void write_tables(void)
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Super.s_state &= ~MINIX_ERROR_FS;
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if (lseek(DEV, 0, SEEK_SET))
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die("seek to boot block failed in write_tables");
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error_msg_and_die("seek to boot block failed in write_tables\n");
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if (512 != write(DEV, boot_block_buffer, 512))
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die("unable to clear boot sector");
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error_msg_and_die("unable to clear boot sector\n");
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if (BLOCK_SIZE != lseek(DEV, BLOCK_SIZE, SEEK_SET))
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die("seek failed in write_tables");
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error_msg_and_die("seek failed in write_tables\n");
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if (BLOCK_SIZE != write(DEV, super_block_buffer, BLOCK_SIZE))
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die("unable to write super-block");
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error_msg_and_die("unable to write super-block\n");
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if (IMAPS * BLOCK_SIZE != write(DEV, inode_map, IMAPS * BLOCK_SIZE))
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die("unable to write inode map");
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error_msg_and_die("unable to write inode map\n");
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if (ZMAPS * BLOCK_SIZE != write(DEV, zone_map, ZMAPS * BLOCK_SIZE))
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die("unable to write zone map");
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error_msg_and_die("unable to write zone map\n");
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if (INODE_BUFFER_SIZE != write(DEV, inode_buffer, INODE_BUFFER_SIZE))
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die("unable to write inodes");
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error_msg_and_die("unable to write inodes\n");
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}
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static void write_block(int blk, char *buffer)
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{
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if (blk * BLOCK_SIZE != lseek(DEV, blk * BLOCK_SIZE, SEEK_SET))
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die("seek failed in write_block");
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error_msg_and_die("seek failed in write_block\n");
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if (BLOCK_SIZE != write(DEV, buffer, BLOCK_SIZE))
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die("write failed in write_block");
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error_msg_and_die("write failed in write_block\n");
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}
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static int get_free_block(void)
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@ -377,7 +365,7 @@ static int get_free_block(void)
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int blk;
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if (used_good_blocks + 1 >= MAX_GOOD_BLOCKS)
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die("too many bad blocks");
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error_msg_and_die("too many bad blocks\n");
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if (used_good_blocks)
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||||
blk = good_blocks_table[used_good_blocks - 1] + 1;
|
||||
else
|
||||
@ -385,7 +373,7 @@ static int get_free_block(void)
|
||||
while (blk < ZONES && zone_in_use(blk))
|
||||
blk++;
|
||||
if (blk >= ZONES)
|
||||
die("not enough good blocks");
|
||||
error_msg_and_die("not enough good blocks\n");
|
||||
good_blocks_table[used_good_blocks] = blk;
|
||||
used_good_blocks++;
|
||||
return blk;
|
||||
@ -451,7 +439,7 @@ static void make_bad_inode(void)
|
||||
goto end_bad;
|
||||
}
|
||||
}
|
||||
die("too many bad blocks");
|
||||
error_msg_and_die("too many bad blocks\n");
|
||||
end_bad:
|
||||
if (ind)
|
||||
write_block(ind, (char *) ind_block);
|
||||
@ -501,7 +489,7 @@ static void make_bad_inode2(void)
|
||||
}
|
||||
}
|
||||
/* Could make triple indirect block here */
|
||||
die("too many bad blocks");
|
||||
error_msg_and_die("too many bad blocks\n");
|
||||
end_bad:
|
||||
if (ind)
|
||||
write_block(ind, (char *) ind_block);
|
||||
@ -602,7 +590,7 @@ static void setup_tables(void)
|
||||
* /sbin/mkfs.minix -i 200 test.fs
|
||||
* */
|
||||
if (i >= 999) {
|
||||
die("unable to allocate buffers for maps");
|
||||
error_msg_and_die("unable to allocate buffers for maps\n");
|
||||
}
|
||||
FIRSTZONE = NORM_FIRSTZONE;
|
||||
inode_map = xmalloc(IMAPS * BLOCK_SIZE);
|
||||
@ -633,7 +621,7 @@ long do_check(char *buffer, int try, unsigned int current_block)
|
||||
/* Seek to the correct loc. */
|
||||
if (lseek(DEV, current_block * BLOCK_SIZE, SEEK_SET) !=
|
||||
current_block * BLOCK_SIZE) {
|
||||
die("seek failed during testing of blocks");
|
||||
error_msg_and_die("seek failed during testing of blocks\n");
|
||||
}
|
||||
|
||||
|
||||
@ -673,7 +661,7 @@ static void check_blocks(void)
|
||||
while (currently_testing < ZONES) {
|
||||
if (lseek(DEV, currently_testing * BLOCK_SIZE, SEEK_SET) !=
|
||||
currently_testing * BLOCK_SIZE)
|
||||
die("seek failed in check_blocks");
|
||||
error_msg_and_die("seek failed in check_blocks\n");
|
||||
try = TEST_BUFFER_BLOCKS;
|
||||
if (currently_testing + try > ZONES)
|
||||
try = ZONES - currently_testing;
|
||||
@ -682,7 +670,7 @@ static void check_blocks(void)
|
||||
if (got == try)
|
||||
continue;
|
||||
if (currently_testing < FIRSTZONE)
|
||||
die("bad blocks before data-area: cannot make fs");
|
||||
error_msg_and_die("bad blocks before data-area: cannot make fs\n");
|
||||
mark_zone(currently_testing);
|
||||
badblocks++;
|
||||
currently_testing++;
|
||||
@ -702,7 +690,7 @@ char *filename;
|
||||
|
||||
listfile = fopen(filename, "r");
|
||||
if (listfile == (FILE *) NULL) {
|
||||
die("can't open file of bad blocks");
|
||||
error_msg_and_die("can't open file of bad blocks\n");
|
||||
}
|
||||
while (!feof(listfile)) {
|
||||
fscanf(listfile, "%ld\n", &blockno);
|
||||
@ -724,10 +712,10 @@ extern int mkfs_minix_main(int argc, char **argv)
|
||||
int stopIt=FALSE;
|
||||
|
||||
if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE)
|
||||
die("bad inode size");
|
||||
error_msg_and_die("bad inode size\n");
|
||||
#ifdef BB_FEATURE_MINIX2
|
||||
if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE)
|
||||
die("bad inode size");
|
||||
error_msg_and_die("bad inode size\n");
|
||||
#endif
|
||||
|
||||
/* Parse options */
|
||||
@ -844,13 +832,13 @@ goodbye:
|
||||
strcpy(tmp + 2, ".badblocks");
|
||||
DEV = open(device_name, O_RDWR);
|
||||
if (DEV < 0)
|
||||
die("unable to open %s");
|
||||
error_msg_and_die("unable to open %s\n", device_name);
|
||||
if (fstat(DEV, &statbuf) < 0)
|
||||
die("unable to stat %s");
|
||||
error_msg_and_die("unable to stat %s\n", device_name);
|
||||
if (!S_ISBLK(statbuf.st_mode))
|
||||
check = 0;
|
||||
else if (statbuf.st_rdev == 0x0300 || statbuf.st_rdev == 0x0340)
|
||||
die("will not try to make filesystem on '%s'");
|
||||
error_msg_and_die("will not try to make filesystem on '%s'\n", device_name);
|
||||
setup_tables();
|
||||
if (check)
|
||||
check_blocks();
|
||||
|
||||
@ -173,12 +173,6 @@ static int bit_test_and_clear(unsigned int *addr, unsigned int nr)
|
||||
}
|
||||
|
||||
|
||||
static void die(const char *str)
|
||||
{
|
||||
error_msg("%s\n", str);
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
|
||||
static void page_ok(int page)
|
||||
{
|
||||
if (version == 0)
|
||||
@ -191,7 +185,7 @@ static void page_bad(int page)
|
||||
bit_test_and_clear(signature_page, page);
|
||||
else {
|
||||
if (badpages == MAX_BADPAGES)
|
||||
die("too many bad pages");
|
||||
error_msg_and_die("too many bad pages\n");
|
||||
p->badpages[badpages] = page;
|
||||
}
|
||||
badpages++;
|
||||
@ -212,7 +206,7 @@ static void check_blocks(void)
|
||||
}
|
||||
if (do_seek && lseek(DEV, current_page * pagesize, SEEK_SET) !=
|
||||
current_page * pagesize)
|
||||
die("seek failed in check_blocks");
|
||||
error_msg_and_die("seek failed in check_blocks\n");
|
||||
if ((do_seek = (pagesize != read(DEV, buffer, pagesize)))) {
|
||||
page_bad(current_page++);
|
||||
continue;
|
||||
@ -369,7 +363,7 @@ int mkswap_main(int argc, char **argv)
|
||||
if (!S_ISBLK(statbuf.st_mode))
|
||||
check = 0;
|
||||
else if (statbuf.st_rdev == 0x0300 || statbuf.st_rdev == 0x0340)
|
||||
die("Will not try to make swapdevice on '%s'");
|
||||
error_msg_and_die("Will not try to make swapdevice on '%s'\n", device_name);
|
||||
|
||||
#ifdef __sparc__
|
||||
if (!force && version == 0) {
|
||||
@ -378,7 +372,7 @@ int mkswap_main(int argc, char **argv)
|
||||
unsigned short *q, sum;
|
||||
|
||||
if (read(DEV, buffer, 512) != 512)
|
||||
die("fatal: first page unreadable");
|
||||
error_msg_and_die("fatal: first page unreadable\n");
|
||||
if (buffer[508] == 0xDA && buffer[509] == 0xBE) {
|
||||
q = (unsigned short *) (buffer + 510);
|
||||
for (sum = 0; q >= (unsigned short *) buffer;)
|
||||
@ -397,7 +391,7 @@ int mkswap_main(int argc, char **argv)
|
||||
if (version == 0 || check)
|
||||
check_blocks();
|
||||
if (version == 0 && !bit_test_and_clear(signature_page, 0))
|
||||
die("fatal: first page unreadable");
|
||||
error_msg_and_die("fatal: first page unreadable\n");
|
||||
if (version == 1) {
|
||||
p->version = version;
|
||||
p->last_page = PAGES - 1;
|
||||
@ -406,23 +400,23 @@ int mkswap_main(int argc, char **argv)
|
||||
|
||||
goodpages = PAGES - badpages - 1;
|
||||
if (goodpages <= 0)
|
||||
die("Unable to set up swap-space: unreadable");
|
||||
error_msg_and_die("Unable to set up swap-space: unreadable\n");
|
||||
printf("Setting up swapspace version %d, size = %ld bytes\n",
|
||||
version, (long) (goodpages * pagesize));
|
||||
write_signature((version == 0) ? "SWAP-SPACE" : "SWAPSPACE2");
|
||||
|
||||
offset = ((version == 0) ? 0 : 1024);
|
||||
if (lseek(DEV, offset, SEEK_SET) != offset)
|
||||
die("unable to rewind swap-device");
|
||||
error_msg_and_die("unable to rewind swap-device\n");
|
||||
if (write(DEV, (char *) signature_page + offset, pagesize - offset)
|
||||
!= pagesize - offset)
|
||||
die("unable to write signature page");
|
||||
error_msg_and_die("unable to write signature page\n");
|
||||
|
||||
/*
|
||||
* A subsequent swapon() will fail if the signature
|
||||
* is not actually on disk. (This is a kernel bug.)
|
||||
*/
|
||||
if (fsync(DEV))
|
||||
die("fsync failed");
|
||||
error_msg_and_die("fsync failed\n");
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user