mirror of
https://github.com/sheumann/hush.git
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d921b2ecc0
things like xasprintf() into xfuncs.c, remove xprint_file_by_name() (it only had one user), clean up lots of #includes... General cleanup pass. What I've been doing for the last couple days. And it conflicts! I've removed httpd.c from this checkin due to somebody else touching that file. It builds for me. I have to catch a bus. (Now you know why I'm looking forward to Mercurial.)
47 lines
1.0 KiB
C
47 lines
1.0 KiB
C
/* vi: set sw=4 ts=4: */
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/* mkswap.c - format swap device (Linux v1 only)
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*
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* Copyright 2006 Rob Landley <rob@landley.net>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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#include <busybox.h>
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int mkswap_main(int argc, char *argv[])
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{
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int fd, pagesize;
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off_t len;
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unsigned int hdr[129];
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// No options supported.
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if (argc!=2) bb_show_usage();
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// Figure out how big the device is and announce our intentions.
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fd = xopen(argv[1],O_RDWR);
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len = fdlength(fd);
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pagesize = getpagesize();
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printf("Setting up swapspace version 1, size = %ld bytes\n", (long)(len-pagesize));
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// Make a header.
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memset(hdr, 0, 129 * sizeof(unsigned int));
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hdr[0] = 1;
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hdr[1] = (len / pagesize) - 1;
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// Write the header. Sync to disk because some kernel versions check
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// signature on disk (not in cache) during swapon.
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xlseek(fd, 1024, SEEK_SET);
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xwrite(fd, hdr, 129 * sizeof(unsigned int));
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xlseek(fd, pagesize-10, SEEK_SET);
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xwrite(fd, "SWAPSPACE2", 10);
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fsync(fd);
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if (ENABLE_FEATURE_CLEAN_UP) close(fd);
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return 0;
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}
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