diff options
Diffstat (limited to 'lib/libc/gen/getpagesize.c')
| -rw-r--r-- | lib/libc/gen/getpagesize.c | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/lib/libc/gen/getpagesize.c b/lib/libc/gen/getpagesize.c index d796b9d..f4b8128 100644 --- a/lib/libc/gen/getpagesize.c +++ b/lib/libc/gen/getpagesize.c @@ -36,8 +36,12 @@ __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <sys/sysctl.h> +#include <errno.h> +#include <link.h> #include <unistd.h> +#include "libc_private.h" + /* * This is unlikely to change over the running time of any * program, so we cache the result to save some syscalls. @@ -52,13 +56,20 @@ getpagesize() int mib[2]; static int value; size_t size; + int error; + + if (value != 0) + return (value); + + error = _elf_aux_info(AT_PAGESZ, &value, sizeof(value)); + if (error == 0 && value != 0) + return (value); + + mib[0] = CTL_HW; + mib[1] = HW_PAGESIZE; + size = sizeof value; + if (sysctl(mib, 2, &value, &size, NULL, 0) == -1) + return (-1); - if (!value) { - mib[0] = CTL_HW; - mib[1] = HW_PAGESIZE; - size = sizeof value; - if (sysctl(mib, 2, &value, &size, NULL, 0) == -1) - return (-1); - } return (value); } |
