FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/tests/zfs-tests/cmd/cp_files.c

     #include <stdio.h>
     #include <stdlib.h>
     #include <unistd.h>
     #include <sys/types.h>
     #include <sys/stat.h>
     #include <fcntl.h>
     #include <dirent.h>
     #include <errno.h>
     #include <string.h>
    
    int
    main(int argc, char *argv[])
    {
            int tfd;
            DIR *sdir;
            struct dirent *dirent;
    
            if (argc != 3) {
                    fprintf(stderr, "Usage: %s SRC DST\n", argv[0]);
                    exit(1);
            }
    
            sdir = opendir(argv[1]);
            if (sdir == NULL) {
                    fprintf(stderr, "Failed to open %s: %s\n",
                        argv[1], strerror(errno));
                    exit(2);
            }
    
            tfd = open(argv[2], O_DIRECTORY);
            if (tfd < 0) {
                    fprintf(stderr, "Failed to open %s: %s\n",
                        argv[2], strerror(errno));
                    closedir(sdir);
                    exit(3);
            }
    
            while ((dirent = readdir(sdir)) != NULL) {
                    if (dirent->d_name[0] == '.' &&
                        (dirent->d_name[1] == '.' || dirent->d_name[1] == '\0'))
                            continue;
    
                    int fd = openat(tfd, dirent->d_name, O_CREAT|O_WRONLY, 0666);
                    if (fd < 0) {
                            fprintf(stderr, "Failed to create %s/%s: %s\n",
                                argv[2], dirent->d_name, strerror(errno));
                            closedir(sdir);
                            close(tfd);
                            exit(4);
                    }
                    close(fd);
            }
    
            closedir(sdir);
            close(tfd);
    
            return (0);
    }

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