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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
------------------------------------------------------------------------------
(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
//usage:#define shred_trivial_usage
//usage: "FILE..."
//usage: "[-fuz] [-n N] FILE..."
//usage:#define shred_full_usage "\n\n"
//usage: "Overwrite/delete FILEs\n"
//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 = getopt32(argv, "fuzn:+vx", &num_iter);
opt = getopt32(argv, "^" "fuzn:+vx" "\0" "-1"/*min 1 arg*/, &num_iter);
argv += optind;
zero_fd = xopen("/dev/zero", O_RDONLY);
if (num_iter != 0)
rand_fd = xopen("/dev/urandom", O_RDONLY);
if (!*argv)
bb_show_usage();
for (;;) {
struct stat sb;
const char *fname;