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| author | Dudi <dudicon@gmail.com> | 2021-11-20 22:12:51 +0200 |
|---|---|---|
| committer | Dudi <dudicon@gmail.com> | 2021-11-20 22:12:51 +0200 |
| commit | ba0872c0b24d9739d8f973f7e66683c1fc7dced5 (patch) | |
| tree | 72bd9819a7cb55694bf71bdcac862ba46cae6a61 /subhook_unix.c | |
| parent | c5aa6ac920f0bfeacb9b3d685ec5d4117e3517f1 (diff) | |
| download | subhook-ba0872c0b24d9739d8f973f7e66683c1fc7dced5.zip subhook-ba0872c0b24d9739d8f973f7e66683c1fc7dced5.tar.gz subhook-ba0872c0b24d9739d8f973f7e66683c1fc7dced5.tar.bz2 | |
Removing subhook_macos.c
Diffstat (limited to 'subhook_unix.c')
| -rw-r--r-- | subhook_unix.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/subhook_unix.c b/subhook_unix.c index 6a5410b..4d9c03a 100644 --- a/subhook_unix.c +++ b/subhook_unix.c @@ -27,6 +27,11 @@ #include <stddef.h> #include <unistd.h> #include <sys/mman.h> +#include "subhook.h" +#ifdef SUBHOOK_APPLE +#include <mach/mach.h> +#endif + #define SUBHOOK_CODE_PROTECT_FLAGS (PROT_READ | PROT_WRITE | PROT_EXEC) @@ -36,7 +41,20 @@ int subhook_unprotect(void *address, size_t size) { pagesize = sysconf(_SC_PAGESIZE); address = (void *)((long)address & ~(pagesize - 1)); - return mprotect(address, size, SUBHOOK_CODE_PROTECT_FLAGS); + int error = mprotect(address, size, SUBHOOK_CODE_PROTECT_FLAGS); +#ifdef SUBHOOK_APPLE + if (-1 == error) + { + /* If mprotect fails, try to use VM_PROT_COPY with vm_protect. */ + kern_return_t kret = vm_protect(mach_task_self(), (unsigned long)address, size, 0, SUBHOOK_CODE_PROTECT_FLAGS | VM_PROT_COPY); + if (kret != KERN_SUCCESS) + { + error = -1; + } + error = 0; + } +#endif + return error; } void *subhook_alloc_code(size_t size) { |