diff options
Diffstat (limited to 'toys/mkswap.c')
-rw-r--r-- | toys/mkswap.c | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/toys/mkswap.c b/toys/mkswap.c deleted file mode 100644 index 87c1550f..00000000 --- a/toys/mkswap.c +++ /dev/null @@ -1,42 +0,0 @@ -/* vi: set sw=4 ts=4: - * - * mkswap.c - Format swap device. - * - * Copyright 2009 Rob Landley <rob@landley.net> - * - * Not in SUSv4. - -USE_MKSWAP(NEWTOY(mkswap, "<1>1", TOYFLAG_SBIN)) - -config MKSWAP - bool "mkswap" - default y - help - usage: mkswap DEVICE - - Sets up a Linux swap area on a device or file. -*/ - -#include "toys.h" - -void mkswap_main(void) -{ - int fd = xopen(*toys.optargs, O_RDWR), pagesize = sysconf(_SC_PAGE_SIZE); - off_t len = fdlength(fd); - unsigned int pages = (len/pagesize)-1, *swap = (unsigned int *)toybuf; - - // Write header. Note that older kernel versions checked signature - // on disk (not in cache) during swapon, so sync after writing. - - swap[0] = 1; - swap[1] = pages; - xlseek(fd, 1024, SEEK_SET); - xwrite(fd, swap, 129*sizeof(unsigned int)); - xlseek(fd, pagesize-10, SEEK_SET); - xwrite(fd, "SWAPSPACE2", 10); - fsync(fd); - - if (CFG_TOYBOX_FREE) close(fd); - - printf("Swapspace size: %luk\n", pages*(unsigned long)(pagesize/1024)); -} |