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authordacctal <donotcontactmevia@email.invalid>2026-06-29 18:29:38 +0000
committerdacctal <donotcontactmevia@email.invalid>2026-06-29 18:29:38 +0000
commitb8a96b5fa7ccb6b170b1fb40c5ea4efe4519e568 (patch)
treedf85e5ad0cbfcc78da3e7450672e1a753b7cd9b0 /src/files.c
parentd85350854dca4c6495cb78c89ff4934c7a908509 (diff)
initialized rewrite
Diffstat (limited to 'src/files.c')
-rw-r--r--src/files.c163
1 files changed, 0 insertions, 163 deletions
diff --git a/src/files.c b/src/files.c
deleted file mode 100644
index 9f13759..0000000
--- a/src/files.c
+++ /dev/null
@@ -1,163 +0,0 @@
-/*
-
- pkgit - package it!
-
- Copyright (C) 2026 dacctal
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <https://www.gnu.org/licenses/>.
-
-*/
-
-#include <dirent.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-const char *get_filename_ext(const char *filename) {
- const char *dot = strrchr(filename, '.');
- if (!dot || dot == filename) return "";
- return dot + 1;
-}
-
-static int write_all(int fd, const void *buf, size_t size) {
- while (size) {
- ssize_t written = write(fd, buf, size);
- if (written < 0) {
- return -1;
- }
-
- size -= written;
- buf = (const char *)buf + written;
- }
-
- return 0;
-}
-
-static int copy_file_content(int src_fd, int dst_fd) {
- char buf[4096];
- ssize_t readed;
- while ((readed = read(src_fd, buf, sizeof(buf))) > 0) {
- if (write_all(dst_fd, buf, readed) < 0) {
- perror("write_all");
- return -1;
- }
- }
-
- if (readed < 0) {
- perror("read");
- return -1;
- }
-
- return 0;
-}
-
-static int copy_at(int src_dir_fd, const char *src_path, int dst_dir_fd, const char *dst_path);
-
-static int copy_dir_content(int src_fd, int dst_fd) {
- int ret = -1;
- // duplicate the descriptor to prevent closedir from closing original one
- src_fd = dup(src_fd);
- if (src_fd < 0) {
- perror("dup");
- goto cleanup0;
- }
-
- DIR *src_dir = fdopendir(src_fd);
- if (!src_dir) {
- perror("fdopendir");
- close(src_fd);
- goto cleanup0;
- }
-
- for (struct dirent *ent; (errno = 0, ent = readdir(src_dir));) {
- if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0) {
- continue;
- }
-
- if (copy_at(src_fd, ent->d_name, dst_fd, ent->d_name) < 0) {
- goto cleanup1;
- }
- }
-
- if (errno != 0) {
- perror("readdir");
- goto cleanup1;
- }
-
- ret = 0;
-
- cleanup1:
- closedir(src_dir);
- cleanup0:
- return ret;
-}
-
-static int copy_at(int src_dir_fd, const char *src_path, int dst_dir_fd, const char *dst_path) {
- int ret = -1;
- int src_fd = openat(src_dir_fd, src_path, O_NOFOLLOW | O_RDONLY);
- if (src_fd < 0) {
- perror("openat");
- goto cleanup0;
- }
-
- struct stat stat;
- if (fstat(src_fd, &stat) < 0) {
- perror("fstat");
- goto cleanup1;
- }
-
- int dst_oflag = O_NOFOLLOW;
- if (S_ISDIR(stat.st_mode)) {
- if (mkdirat(dst_dir_fd, dst_path, stat.st_mode) < 0) {
- perror("mkdirat");
- goto cleanup1;
- }
-
- dst_oflag |= O_RDONLY | O_DIRECTORY;
- } else {
- dst_oflag |= O_WRONLY | O_CREAT | O_EXCL;
- }
-
- int dst_fd = openat(dst_dir_fd, dst_path, dst_oflag, stat.st_mode);
- if (dst_fd < 0) {
- perror("openat");
- goto cleanup1;
- }
-
- switch (stat.st_mode & S_IFMT) {
- case S_IFDIR:
- ret = copy_dir_content(src_fd, dst_fd);
- break;
- case S_IFREG:
- ret = copy_file_content(src_fd, dst_fd);
- break;
- default:
- fprintf(stderr, "copy_at: unsupported file inode type\n");
- }
- goto cleanup2;
-
- cleanup2:
- close(dst_fd);
- cleanup1:
- close(src_fd);
- cleanup0:
- return ret;
-}
-
-void cpdir(const char *src_path, const char *dst_path) {
- copy_at(AT_FDCWD, src_path, AT_FDCWD, dst_path);
-}