diff options
Diffstat (limited to 'lib/libc/gen/getpagesizes.c')
| -rw-r--r-- | lib/libc/gen/getpagesizes.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/lib/libc/gen/getpagesizes.c b/lib/libc/gen/getpagesizes.c index b0de939..534fe9e 100644 --- a/lib/libc/gen/getpagesizes.c +++ b/lib/libc/gen/getpagesizes.c @@ -32,6 +32,9 @@ __FBSDID("$FreeBSD$"); #include <sys/sysctl.h> #include <errno.h> +#include <link.h> + +#include "libc_private.h" /* * Retrieves page size information from the system. Specifically, returns the @@ -51,7 +54,7 @@ getpagesizes(size_t pagesize[], int nelem) static u_long ps[MAXPAGESIZES]; static int nops; size_t size; - int i; + int error, i; if (nelem < 0 || (nelem > 0 && pagesize == NULL)) { errno = EINVAL; @@ -59,9 +62,13 @@ getpagesizes(size_t pagesize[], int nelem) } /* Cache the result of the sysctl(2). */ if (nops == 0) { + error = _elf_aux_info(AT_PAGESIZES, ps, sizeof(ps)); size = sizeof(ps); - if (sysctlbyname("hw.pagesizes", ps, &size, NULL, 0) == -1) - return (-1); + if (error != 0 || ps[0] == 0) { + if (sysctlbyname("hw.pagesizes", ps, &size, NULL, 0) + == -1) + return (-1); + } /* Count the number of page sizes that are supported. */ nops = size / sizeof(ps[0]); while (nops > 0 && ps[nops - 1] == 0) |
