Florian Fischer
88 lines
3.1 KiB
C
88 lines
3.1 KiB
C
/// @file stat.c
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/// @brief display file status
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/// @copyright (c) 2024 This file is distributed under the MIT License.
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/// See LICENSE.md for details.
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#include <fcntl.h>
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#include <io/debug.h>
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#include <stdio.h>
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#include <strerror.h>
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#include <string.h>
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#include <sys/bitops.h>
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#include <sys/errno.h>
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#include <sys/stat.h>
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#include <sys/unistd.h>
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// Copied from mentos/src/fs/ext2.c
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// File types.
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#define S_IFMT 0xF000 ///< Format mask
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#define S_IFSOCK 0xC000 ///< Socket
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#define S_IFLNK 0xA000 ///< Symbolic link
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#define S_IFREG 0x8000 ///< Regular file
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#define S_IFBLK 0x6000 ///< Block device
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#define S_IFDIR 0x4000 ///< Directory
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#define S_IFCHR 0x2000 ///< Character device
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#define S_IFIFO 0x1000 ///< Fifo
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void __print_time(const char* prefix, time_t *time) {
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tm_t *timeinfo = localtime(time);
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printf("%s%d-%d-%d %d:%d:%d\n",
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prefix,
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timeinfo->tm_year,
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timeinfo->tm_mon,
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timeinfo->tm_mday,
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timeinfo->tm_hour,
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timeinfo->tm_min,
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timeinfo->tm_sec);
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}
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int main(int argc, char** argv)
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{
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if (argc != 2) {
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printf("%s: missing operand.\n", argv[0]);
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printf("Try '%s --help' for more information.\n\n", argv[0]);
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exit(1);
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}
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if (strcmp(argv[1], "--help") == 0) {
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printf("Usage: %s FILE\n", argv[0]);
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printf( "Display file status.\n");
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exit(0);
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}
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stat_t statbuf;
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if(stat(argv[1], &statbuf) == -1) {
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printf("%s: cannot stat '%s': %s\n", argv[0], argv[1], strerror(errno));
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exit(1);
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}
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printf("File: %s\n", argv[1]);
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printf("Size: %s\n", to_human_size(statbuf.st_size));
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printf("File type: ");
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switch (statbuf.st_mode & S_IFMT) {
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case S_IFBLK: printf("block device\n"); break;
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case S_IFCHR: printf("character device\n"); break;
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case S_IFDIR: printf("directory\n"); break;
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case S_IFIFO: printf("FIFO/pipe\n"); break;
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case S_IFLNK: printf("symlink\n"); break;
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case S_IFREG: printf("regular file\n"); break;
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case S_IFSOCK: printf("socket\n"); break;
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default: printf("unknown?\n"); break;
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}
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printf("Access: (%.4o/", statbuf.st_mode & 0xFFF);
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// Print the access permissions.
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putchar(bitmask_check(statbuf.st_mode, S_IRUSR) ? 'r' : '-');
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putchar(bitmask_check(statbuf.st_mode, S_IWUSR) ? 'w' : '-');
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putchar(bitmask_check(statbuf.st_mode, S_IXUSR) ? 'x' : '-');
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putchar(bitmask_check(statbuf.st_mode, S_IRGRP) ? 'r' : '-');
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putchar(bitmask_check(statbuf.st_mode, S_IWGRP) ? 'w' : '-');
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putchar(bitmask_check(statbuf.st_mode, S_IXGRP) ? 'x' : '-');
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putchar(bitmask_check(statbuf.st_mode, S_IROTH) ? 'r' : '-');
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putchar(bitmask_check(statbuf.st_mode, S_IWOTH) ? 'w' : '-');
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putchar(bitmask_check(statbuf.st_mode, S_IXOTH) ? 'x' : '-');
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printf(") Uid: (%d) Gid: (%d)\n", statbuf.st_uid, statbuf.st_gid);
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__print_time("Access: ", &statbuf.st_atime);
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__print_time("Modify: ", &statbuf.st_mtime);
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__print_time("Change: ", &statbuf.st_ctime);
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return 0;
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}
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