diff options
Diffstat (limited to 'console-tools/dumpkmap.c')
| -rw-r--r-- | console-tools/dumpkmap.c | 19 |
1 files changed, 3 insertions, 16 deletions
diff --git a/console-tools/dumpkmap.c b/console-tools/dumpkmap.c index 5ffb0cd..b803e57 100644 --- a/console-tools/dumpkmap.c +++ b/console-tools/dumpkmap.c @@ -16,6 +16,7 @@ //config: stdout, in binary format. You can then use loadkmap to load it. //applet:IF_DUMPKMAP(APPLET_NOEXEC(dumpkmap, dumpkmap, BB_DIR_BIN, BB_SUID_DROP, dumpkmap)) +/* bb_common_bufsiz1 usage here is safe wrt NOEXEC: not expecting it to be zeroed. */ //kbuild:lib-$(CONFIG_DUMPKMAP) += dumpkmap.o @@ -47,8 +48,6 @@ int dumpkmap_main(int argc UNUSED_PARAM, char **argv) { struct kbentry ke; int i, j, fd; -#define flags bb_common_bufsiz1 - setup_common_bufsiz(); /* When user accidentally runs "dumpkmap FILE" * instead of "dumpkmap >FILE", we'd dump binary stuff to tty. @@ -60,19 +59,8 @@ int dumpkmap_main(int argc UNUSED_PARAM, char **argv) fd = get_console_fd_or_die(); -#if 0 - write(STDOUT_FILENO, "bkeymap", 7); - /* Here we want to set everything to 0 except for indexes: - * [0-2] [4-6] [8-10] [12] - */ - /*memset(flags, 0x00, MAX_NR_KEYMAPS); - already is */ - memset(flags, 0x01, 13); - flags[3] = flags[7] = flags[11] = 0; - /* dump flags */ - write(STDOUT_FILENO, flags, MAX_NR_KEYMAPS); -#define flags7 flags -#else - /* Same effect */ +#define flags bb_common_bufsiz1 + setup_common_bufsiz(); /* 0 1 2 3 4 5 6 7 8 9 a b c=12 */ memcpy(flags, "bkeymap\1\1\1\0\1\1\1\0\1\1\1\0\1", /* Can use sizeof, or sizeof-1. sizeof is even, using that */ @@ -80,7 +68,6 @@ int dumpkmap_main(int argc UNUSED_PARAM, char **argv) ); write(STDOUT_FILENO, flags, 7 + MAX_NR_KEYMAPS); #define flags7 (flags + 7) -#endif for (i = 0; i < 13; i++) { if (flags7[i]) { |