ubase

suckless linux base utils
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commit 41769b976a17a5704cfc0ae27d1ec72c54fbf52e
parent 9c37575961239dc7d0d203fff341c0c7677950ba
Author: sin <sin@2f30.org>
Date:   Tue Oct 29 15:54:12 +0000

Check for a valid pagesize in mkswap(8)

Diffstat:
mkswap.c | 7++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/mkswap.c b/mkswap.c @@ -45,7 +45,12 @@ main(int argc, char *argv[]) if (argc < 1) usage(); - pagesize = sysconf(_SC_PAGE_SIZE); + pagesize = sysconf(_SC_PAGESIZE); + if (pagesize <= 0) { + pagesize = sysconf(_SC_PAGE_SIZE); + if (pagesize <= 0) + enprintf(EXIT_FAILURE, "can't determine pagesize\n"); + } fd = open(argv[0], O_RDWR); if (fd < 0)