summaryrefslogtreecommitdiff
path: root/lib/mlibc/options/posix/generic/sys-mman-stubs.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'lib/mlibc/options/posix/generic/sys-mman-stubs.cpp')
-rw-r--r--lib/mlibc/options/posix/generic/sys-mman-stubs.cpp177
1 files changed, 0 insertions, 177 deletions
diff --git a/lib/mlibc/options/posix/generic/sys-mman-stubs.cpp b/lib/mlibc/options/posix/generic/sys-mman-stubs.cpp
deleted file mode 100644
index 9383976..0000000
--- a/lib/mlibc/options/posix/generic/sys-mman-stubs.cpp
+++ /dev/null
@@ -1,177 +0,0 @@
-
-#include <errno.h>
-#include <limits.h>
-#include <pthread.h>
-#include <unistd.h>
-#include <sys/mman.h>
-#include <bits/ensure.h>
-
-#include <mlibc/debug.hpp>
-#include <mlibc/posix-sysdeps.hpp>
-
-int mprotect(void *pointer, size_t size, int prot) {
- MLIBC_CHECK_OR_ENOSYS(mlibc::sys_vm_protect, -1);
- if(int e = mlibc::sys_vm_protect(pointer, size, prot); e) {
- errno = e;
- return -1;
- }
- return 0;
-}
-
-int mlock(const void *addr, size_t len) {
- MLIBC_CHECK_OR_ENOSYS(mlibc::sys_mlock, -1);
- if(int e = mlibc::sys_mlock(addr, len); e) {
- errno = e;
- return -1;
- }
- return 0;
-}
-
-int mlockall(int flags) {
- MLIBC_CHECK_OR_ENOSYS(mlibc::sys_mlockall, -1);
- if(int e = mlibc::sys_mlockall(flags); e) {
- errno = e;
- return -1;
- }
- return 0;
-}
-
-int munlock(const void *addr, size_t len) {
- MLIBC_CHECK_OR_ENOSYS(mlibc::sys_munlock, -1);
- if(int e = mlibc::sys_munlock(addr, len); e) {
- errno = e;
- return -1;
- }
- return 0;
-}
-
-int munlockall(void) {
- MLIBC_CHECK_OR_ENOSYS(mlibc::sys_munlockall, -1);
- if(int e = mlibc::sys_munlockall(); e) {
- errno = e;
- return -1;
- }
- return 0;
-}
-
-
-int posix_madvise(void *, size_t, int) {
- mlibc::infoLogger() << "\e[31m" "mlibc: posix_madvise() fails unconditionally" "\e[39m"
- << frg::endlog;
- return ENOSYS;
-}
-
-int msync(void *addr, size_t length, int flags) {
- MLIBC_CHECK_OR_ENOSYS(mlibc::sys_msync, -1);
- if(int e = mlibc::sys_msync(addr, length, flags); e) {
- errno = e;
- return -1;
- }
- return 0;
-}
-
-void *mremap(void *pointer, size_t size, size_t new_size, int flags, ...) {
- __ensure(flags == MREMAP_MAYMOVE);
-
- void *window;
- MLIBC_CHECK_OR_ENOSYS(mlibc::sys_vm_remap, (void *)-1);
- if(int e = mlibc::sys_vm_remap(pointer, size, new_size, &window); e) {
- errno = e;
- return (void *)-1;
- }
- return window;
-}
-
-int remap_file_pages(void *, size_t, int, size_t, int) {
- __ensure(!"Not implemented");
- __builtin_unreachable();
-}
-
-void *mmap(void *hint, size_t size, int prot, int flags, int fd, off_t offset) {
- void *window;
- if(int e = mlibc::sys_vm_map(hint, size, prot, flags, fd, offset, &window); e) {
- errno = e;
- return (void *)-1;
- }
- return window;
-}
-
-int munmap(void *pointer, size_t size) {
- if(int e = mlibc::sys_vm_unmap(pointer, size); e) {
- errno = e;
- return -1;
- }
- return 0;
-}
-
-// The implementation of shm_open and shm_unlink is taken from musl.
-namespace {
- char *shm_mapname(const char *name, char *buf) {
- char *p;
- while(*name == '/')
- name++;
- if(*(p = strchrnul(name, '/')) || p == name ||
- (p - name <= 2 && name[0] == '.' && p[-1] == '.')) {
- errno = EINVAL;
- return 0;
- }
- if(p - name > NAME_MAX) {
- errno = ENAMETOOLONG;
- return 0;
- }
- memcpy(buf, "/dev/shm/", 9);
- memcpy(buf + 9, name, p - name + 1);
- return buf;
- }
-}
-
-int shm_open(const char *name, int flags, mode_t mode) {
- int cs;
- char buf[NAME_MAX + 10];
- if(!(name = shm_mapname(name, buf)))
- return -1;
- pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
- int fd = open(name, flags | O_NOFOLLOW | O_CLOEXEC | O_NONBLOCK, mode);
- pthread_setcancelstate(cs, 0);
- return fd;
-}
-
-int shm_unlink(const char *name) {
- char buf[NAME_MAX + 10];
- if(!(name = shm_mapname(name, buf)))
- return -1;
- return unlink(name);
-}
-
-#if __MLIBC_LINUX_OPTION
-int memfd_create(const char *name, unsigned int flags) {
- int ret = -1;
-
- MLIBC_CHECK_OR_ENOSYS(mlibc::sys_memfd_create, -1);
- if(int e = mlibc::sys_memfd_create(name, flags, &ret)) {
- errno = e;
- return -1;
- }
-
- return ret;
-}
-
-int madvise(void *addr, size_t length, int advice) {
- MLIBC_CHECK_OR_ENOSYS(mlibc::sys_madvise, -1);
- if(int e = mlibc::sys_madvise(addr, length, advice)) {
- errno = e;
- return -1;
- }
-
- return 0;
-}
-
-int mincore(void *addr, size_t length, unsigned char *vec) {
- MLIBC_CHECK_OR_ENOSYS(mlibc::sys_munlockall, -1);
- if(int e = mlibc::sys_mincore(addr, length, vec); e) {
- errno = e;
- return -1;
- }
- return 0;
-}
-#endif /* __MLIBC_LINUX_OPTION */