mirror of
https://github.com/sheumann/hush.git
synced 2024-12-22 14:30:31 +00:00
2ec91aead5
function old new delta whoami_main 34 37 +3 logname_main 60 63 +3 hostid_main 35 38 +3 ttysize_main 136 135 -1 nmeter_main 673 672 -1 logger_main 387 386 -1 uuencode_main 330 328 -2 ifupdown_main 2125 2123 -2 mesg_main 158 155 -3 free_main 333 330 -3 cal_main 902 899 -3 acpid_main 443 440 -3 ar_main 196 189 -7 find_main 476 467 -9 ifconfig_main 1235 1221 -14 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/12 up/down: 9/-49) Total: -40 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
43 lines
907 B
C
43 lines
907 B
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* readahead implementation for busybox
|
|
*
|
|
* Preloads the given files in RAM, to reduce access time.
|
|
* Does this by calling the readahead(2) system call.
|
|
*
|
|
* Copyright (C) 2006 Michael Opdenacker <michael@free-electrons.com>
|
|
*
|
|
* Licensed under GPLv2 or later, see file License in this tarball for details.
|
|
*/
|
|
|
|
#include "libbb.h"
|
|
|
|
int readahead_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int readahead_main(int argc UNUSED_PARAM, char **argv)
|
|
{
|
|
int retval = EXIT_SUCCESS;
|
|
|
|
if (!argv[1]) {
|
|
bb_show_usage();
|
|
}
|
|
|
|
while (*++argv) {
|
|
int fd = open_or_warn(*argv, O_RDONLY);
|
|
if (fd >= 0) {
|
|
off_t len;
|
|
int r;
|
|
|
|
/* fdlength was reported to be unreliable - use seek */
|
|
len = xlseek(fd, 0, SEEK_END);
|
|
xlseek(fd, 0, SEEK_SET);
|
|
r = readahead(fd, 0, len);
|
|
close(fd);
|
|
if (r >= 0)
|
|
continue;
|
|
}
|
|
retval = EXIT_FAILURE;
|
|
}
|
|
|
|
return retval;
|
|
}
|