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LibC: Add POSIX spec comments for memory management APIs

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This commit is contained in:
Brian Gianforcaro 2021-12-20 01:27:20 -08:00 • committed by Brian Gianforcaro
parent 4484634d8a
commit 5568aee35f
1 changed files with 5 additions and 0 deletions
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5
Userland/Libraries/LibC/sys/mman.cpp
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@ -24,6 +24,7 @@ void* serenity_mmap(void* addr, size_t size, int prot, int flags, int fd, off_t
return (void*)rc; return (void*)rc;
} }
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/mmap.html
void* mmap(void* addr, size_t size, int prot, int flags, int fd, off_t offset) void* mmap(void* addr, size_t size, int prot, int flags, int fd, off_t offset)
{ {
return serenity_mmap(addr, size, prot, flags, fd, offset, PAGE_SIZE, nullptr); return serenity_mmap(addr, size, prot, flags, fd, offset, PAGE_SIZE, nullptr);
@ -45,12 +46,14 @@ void* mremap(void* old_address, size_t old_size, size_t new_size, int flags)
return (void*)rc; return (void*)rc;
} }
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/munmap.html
int munmap(void* addr, size_t size) int munmap(void* addr, size_t size)
{ {
int rc = syscall(SC_munmap, addr, size); int rc = syscall(SC_munmap, addr, size);
__RETURN_WITH_ERRNO(rc, rc, -1); __RETURN_WITH_ERRNO(rc, rc, -1);
} }
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/mprotect.html
int mprotect(void* addr, size_t size, int prot) int mprotect(void* addr, size_t size, int prot)
{ {
int rc = syscall(SC_mprotect, addr, size, prot); int rc = syscall(SC_mprotect, addr, size, prot);
@ -84,12 +87,14 @@ void* allocate_tls(const char* initial_data, size_t size)
return (void*)rc; return (void*)rc;
} }
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/mlock.html
int mlock(const void*, size_t) int mlock(const void*, size_t)
{ {
dbgln("FIXME: Implement mlock()"); dbgln("FIXME: Implement mlock()");
return 0; return 0;
} }
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/msync.html
int msync(void* address, size_t size, int flags) int msync(void* address, size_t size, int flags)
{ {
int rc = syscall(SC_msync, address, size, flags); int rc = syscall(SC_msync, address, size, flags);