diff options
Diffstat (limited to 'utils/libdislocator/libdislocator.so.c')
| -rw-r--r-- | utils/libdislocator/libdislocator.so.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/utils/libdislocator/libdislocator.so.c b/utils/libdislocator/libdislocator.so.c index 103da9d5..bd08a678 100644 --- a/utils/libdislocator/libdislocator.so.c +++ b/utils/libdislocator/libdislocator.so.c @@ -39,6 +39,7 @@ #if (defined(__linux__) && !defined(__ANDROID__)) || defined(__HAIKU__) #include <unistd.h> + #include <sys/prctl.h> #ifdef __linux__ #include <sys/syscall.h> #include <malloc.h> @@ -66,6 +67,10 @@ } while (0) #endif + #ifndef PR_SET_VMA + #define PR_SET_VMA 0x53564d41 + #define PR_SET_VMA_ANON_NAME 0 + #endif #endif #include "config.h" @@ -251,6 +256,20 @@ static void *__dislocator_alloc(size_t len) { } +#if defined(USENAMEDPAGE) + #if defined(__linux__) + // in the /proc/<pid>/maps file, the anonymous page appears as + // `<start>-<end> ---p 00000000 00:00 0 [anon:libdislocator]` + if (prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, (unsigned long)ret, tlen, + (unsigned long)"libdislocator") < 0) { + + DEBUGF("prctl() failed"); + + } + + #endif +#endif + /* Set PROT_NONE on the last page. */ if (mprotect(ret + PG_COUNT(rlen + 8) * PAGE_SIZE, PAGE_SIZE, PROT_NONE)) |