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authorIan Moffett <ian@osmora.org>2024-03-07 17:28:52 -0500
committerIan Moffett <ian@osmora.org>2024-03-07 18:24:51 -0500
commitf5e48e94a2f4d4bbd6e5628c7f2afafc6dbcc459 (patch)
tree93b156621dc0303816b37f60ba88051b702d92f6 /lib/mlibc/options/posix/generic/dirent-stubs.cpp
parentbd5969fc876a10b18613302db7087ef3c40f18e1 (diff)
build: Build mlibc + add distclean target
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'lib/mlibc/options/posix/generic/dirent-stubs.cpp')
-rw-r--r--lib/mlibc/options/posix/generic/dirent-stubs.cpp180
1 files changed, 0 insertions, 180 deletions
diff --git a/lib/mlibc/options/posix/generic/dirent-stubs.cpp b/lib/mlibc/options/posix/generic/dirent-stubs.cpp
deleted file mode 100644
index 1352585..0000000
--- a/lib/mlibc/options/posix/generic/dirent-stubs.cpp
+++ /dev/null
@@ -1,180 +0,0 @@
-
-#include <errno.h>
-#include <dirent.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <sys/stat.h>
-#include <stdlib.h>
-
-#include <bits/ensure.h>
-#include <frg/allocation.hpp>
-#include <mlibc/allocator.hpp>
-#include <mlibc/posix-sysdeps.hpp>
-#include <mlibc/debug.hpp>
-
-// Code taken from musl
-int alphasort(const struct dirent **a, const struct dirent **b) {
- return strcoll((*a)->d_name, (*b)->d_name);
-}
-
-int closedir(DIR *dir) {
- // TODO: Deallocate the dir structure.
- close(dir->__handle);
- return 0;
-}
-int dirfd(DIR *dir) {
- return dir->__handle;
-}
-DIR *fdopendir(int fd) {
- struct stat st;
-
- if(fstat(fd, &st) < 0) {
- return nullptr;
- }
- // Musl implements this, but O_PATH is only declared on the linux abi
- /*if(fcntl(fd, F_GETFL) & O_PATH) {
- errno = EBADF;
- return nullptr;
- }*/
- if(!S_ISDIR(st.st_mode)) {
- errno = ENOTDIR;
- return nullptr;
- }
- auto dir = frg::construct<__mlibc_dir_struct>(getAllocator());
- __ensure(dir);
- dir->__ent_next = 0;
- dir->__ent_limit = 0;
- int flags = fcntl(fd, F_GETFD);
- fcntl(fd, F_SETFD, flags | FD_CLOEXEC);
- dir->__handle = fd;
- return dir;
-}
-DIR *opendir(const char *path) {
- auto dir = frg::construct<__mlibc_dir_struct>(getAllocator());
- __ensure(dir);
- dir->__ent_next = 0;
- dir->__ent_limit = 0;
-
- MLIBC_CHECK_OR_ENOSYS(mlibc::sys_open_dir, nullptr);
- if(int e = mlibc::sys_open_dir(path, &dir->__handle); e) {
- errno = e;
- frg::destruct(getAllocator(), dir);
- return nullptr;
- }else{
- return dir;
- }
-}
-struct dirent *readdir(DIR *dir) {
- __ensure(dir->__ent_next <= dir->__ent_limit);
- if(dir->__ent_next == dir->__ent_limit) {
- MLIBC_CHECK_OR_ENOSYS(mlibc::sys_read_entries, nullptr);
- if(int e = mlibc::sys_read_entries(dir->__handle, dir->__ent_buffer, 2048, &dir->__ent_limit); e)
- __ensure(!"mlibc::sys_read_entries() failed");
- dir->__ent_next = 0;
- if(!dir->__ent_limit)
- return nullptr;
- }
-
- auto entp = reinterpret_cast<struct dirent *>(dir->__ent_buffer + dir->__ent_next);
- // We only copy as many bytes as we need to avoid buffer-overflows.
- memcpy(&dir->__current, entp, offsetof(struct dirent, d_name) + strlen(entp->d_name) + 1);
- dir->__ent_next += entp->d_reclen;
- return &dir->__current;
-}
-int readdir_r(DIR *dir, struct dirent *entry, struct dirent **result) {
- if(!mlibc::sys_read_entries) {
- MLIBC_MISSING_SYSDEP();
- return ENOSYS;
- }
-
- __ensure(dir->__ent_next <= dir->__ent_limit);
- if(dir->__ent_next == dir->__ent_limit) {
- if(int e = mlibc::sys_read_entries(dir->__handle, dir->__ent_buffer, 2048, &dir->__ent_limit); e)
- __ensure(!"mlibc::sys_read_entries() failed");
- dir->__ent_next = 0;
- if(!dir->__ent_limit) {
- *result = NULL;
- return 0;
- }
- }
-
- auto entp = reinterpret_cast<struct dirent *>(dir->__ent_buffer + dir->__ent_next);
- // We only copy as many bytes as we need to avoid buffer-overflows.
- memcpy(entry, entp, offsetof(struct dirent, d_name) + strlen(entp->d_name) + 1);
- dir->__ent_next += entp->d_reclen;
- *result = entry;
- return 0;
-}
-
-void rewinddir(DIR *dir) {
- lseek(dir->__handle, 0, SEEK_SET);
- dir->__ent_next = 0;
-}
-
-int scandir(const char *path, struct dirent ***res, int (*select)(const struct dirent *),
- int (*compare)(const struct dirent **, const struct dirent **)) {
- DIR *dir = opendir(path);
- if (!dir)
- return -1; // errno will be set by opendir()
-
- // we should save the errno
- int old_errno = errno;
- errno = 0;
-
- struct dirent *dir_ent;
- struct dirent **array = nullptr, **tmp = nullptr;
- int length = 0;
- int count = 0;
- while((dir_ent = readdir(dir)) && !errno) {
- if(select && !select(dir_ent))
- continue;
-
- if(count >= length) {
- length = 2*length + 1;
- tmp = static_cast<struct dirent**>(realloc(array,
- length * sizeof(struct dirent*)));
- // we need to check the call actually goes through
- // before we overwrite array so that we can
- // deallocate the already written entries should realloc()
- // have failed
- if(!tmp)
- break;
- array = tmp;
- }
- array[count] = static_cast<struct dirent*>(malloc(dir_ent->d_reclen));
- if(!array[count])
- break;
-
- memcpy(array[count], dir_ent, dir_ent->d_reclen);
- count++;
- }
-
- if(errno) {
- if(array)
- while(count-- > 0)
- free(array[count]);
- free(array);
- return -1;
- }
-
- // from here we can set the old errno back
- errno = old_errno;
-
- if(compare)
- qsort(array, count, sizeof(struct dirent*),
- (int (*)(const void *, const void *)) compare);
- *res = array;
- return count;
-}
-void seekdir(DIR *, long) {
- __ensure(!"Not implemented");
- __builtin_unreachable();
-}
-long telldir(DIR *) {
- __ensure(!"Not implemented");
- __builtin_unreachable();
-}
-
-int versionsort(const struct dirent **a, const struct dirent **b) {
- return strverscmp((*a)->d_name, (*b)->d_name);
-}