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shuf: simplify check that we have at least one FILE

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function                                             old     new   delta
.rodata                                           103190  103194      +4
packed_usage                                       33541   33537      -4
shred_main                                           354     337     -17
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(add/remove: 0/0 grow/shrink: 1/2 up/down: 4/-21)             Total: -17 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2021-06-15 10:39:33 +02:00
parent 1f60d88cf6
commit e47000490c
2 changed files with 4 additions and 7 deletions
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7
coreutils/shred.c
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@ -15,7 +15,7 @@
//kbuild:lib-$(CONFIG_SHRED) += shred.o //kbuild:lib-$(CONFIG_SHRED) += shred.o
//usage:#define shred_trivial_usage //usage:#define shred_trivial_usage
//usage: "FILE..." //usage: "[-fuz] [-n N] FILE..."
//usage:#define shred_full_usage "\n\n" //usage:#define shred_full_usage "\n\n"
//usage: "Overwrite/delete FILEs\n" //usage: "Overwrite/delete FILEs\n"
//usage: "\n -f Chmod to ensure writability" //usage: "\n -f Chmod to ensure writability"
@ -54,16 +54,13 @@ int shred_main(int argc UNUSED_PARAM, char **argv)
OPT_x = (1 << 5), OPT_x = (1 << 5),
}; };
opt = getopt32(argv, "fuzn:+vx", &num_iter); opt = getopt32(argv, "^" "fuzn:+vx" "\0" "-1"/*min 1 arg*/, &num_iter);
argv += optind; argv += optind;
zero_fd = xopen("/dev/zero", O_RDONLY); zero_fd = xopen("/dev/zero", O_RDONLY);
if (num_iter != 0) if (num_iter != 0)
rand_fd = xopen("/dev/urandom", O_RDONLY); rand_fd = xopen("/dev/urandom", O_RDONLY);
if (!*argv)
bb_show_usage();
for (;;) { for (;;) {
struct stat sb; struct stat sb;
const char *fname; const char *fname;

4
miscutils/strings.c
View File

@ -18,7 +18,7 @@
//kbuild:lib-$(CONFIG_STRINGS) += strings.o //kbuild:lib-$(CONFIG_STRINGS) += strings.o
//usage:#define strings_trivial_usage //usage:#define strings_trivial_usage
//usage: "[-fo] [-t o/d/x] [-n LEN] [FILE]..." //usage: "[-fo] [-t o|d|x] [-n LEN] [FILE]..."
//usage:#define strings_full_usage "\n\n" //usage:#define strings_full_usage "\n\n"
//usage: "Display printable strings in a binary file\n" //usage: "Display printable strings in a binary file\n"
//We usually don't bother user with "nop" options. They work, but are not shown: //We usually don't bother user with "nop" options. They work, but are not shown:
@ -26,7 +26,7 @@
//unimplemented alternative is -d: Only strings from initialized, loaded data sections //unimplemented alternative is -d: Only strings from initialized, loaded data sections
//usage: "\n -f Precede strings with filenames" //usage: "\n -f Precede strings with filenames"
//usage: "\n -o Precede strings with octal offsets" //usage: "\n -o Precede strings with octal offsets"
//usage: "\n -t o/d/x Precede strings with offsets in base 8/10/16" //usage: "\n -t o|d|x Precede strings with offsets in base 8/10/16"
//usage: "\n -n LEN At least LEN characters form a string (default 4)" //usage: "\n -n LEN At least LEN characters form a string (default 4)"
#include "libbb.h" #include "libbb.h"