C - Modify the fsize program to print the other information contained in the inode entry-蒲公英云

C - Modify the fsize program to print the other information contained in the inode entry

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/*
 * dirent.h - by FreeMan
 */
#define NAME_MAX 14 /* longest filename component; */
/* system-dependent */
typedef struct { /* portable directory entry */
    long ino; /* inode number */
    char name[NAME_MAX + 1]; /* name + '\0' terminator */
} Dirent;
typedef struct { /* minimal DIR: no buffering, etc. */
    int fd; /* file descriptor for the directory */
    Dirent d; /* the directory entry */
} DIR;
DIR *opendir(char *dirname);
Dirent *readdir(DIR *dfd);
void closedir(DIR *dfd);
/*
 * Modify the fsize program to print the other information contained in the inode entry.
 *
 * FSize.c - by FreeMan
 */
#include <stdio.h>
#include <stdlib.h>
#include <io.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "dirent.h"
#include <string.h>
#include <time.h>
void fsize(char *);
int main(int argc, char *argv[])
{
    if (argc == 1)
    {
        fsize(".");
    }
    else
    {
        while (--argc > 0)
        {
            fsize(*++argv);
        }
    }
    return 0;
}
void dirwalk(char *, void (*fcn)(char *));
void fsize(char *name)
{
    struct stat stbuf;
    if (stat(name, &stbuf) == -1)
    {
        fprintf(stderr, "fsize: can't access %s\n", name);
        return;
    }
    if ((stbuf.st_mode & _S_IFMT) == _S_IFDIR)
    {
        dirwalk(name, fsize);
    }
    printf("%8ld %s\n", stbuf.st_size, name);
}
#define MAX_PATH 1024
void dirwalk(char *dir, void (*fcn)(char *))
{
    char name[MAX_PATH];
    Dirent *dp;
    DIR *dfd;
    if ((dfd = opendir(dir)) == NULL)
    {
        fprintf(stderr, "dirwalk: can't open %s\n", dir);
        return;
    }
    while ((dp = readdir(dfd)) != NULL)
    {
        if (strcmp(dp->name, ".") == 0 || strcmp(dp->name, "..") == 0)
        {
            continue;
        }
        if (strlen(dir) + strlen(dp->name) + 2 > sizeof(name))
        {
            fprintf(stderr, "dirwalkd: name %s/%s too long\n", dir, dp->name);
        }
        else
        {
            sprintf(name, "%s/%s", dir, dp->name);
            (*fcn)(name);
        }
    }
    closedir(dfd);
}
#ifndef DIRSIZ
#define DIRSIZ 14
#endif
struct direct
{
    ino_t d_ino;
    char d_name[DIRSIZ];
};
int fstat(int fd, struct stat *);
DIR *opendir(char *dirname)
{
    int fd;
    struct stat stbuf;
    DIR *dp;
    if ((fd = open(dirname, O_RDONLY, 0)) == -1 ||
        fstat(fd, &stbuf) == -1 ||
        (stbuf.st_mode & _S_IFMT) != _S_IFDIR ||
        (dp = (DIR *)malloc(sizeof(DIR))) == NULL)
    {
        return NULL;
    }
    dp->fd = fd;
    return dp;
}
void closedir(DIR *dp)
{
    if (dp)
    {
        close(dp->fd);
        free(dp);
    }
}
Dirent *readdir(DIR *dp)
{
    struct direct dirbuf;
    static Dirent d;
    while (read(dp->fd, (char *)&dirbuf, sizeof(dirbuf)) == sizeof(dirbuf))
    {
        if (dirbuf.d_ino == 0)
        {
            continue;
        }
        d.ino = dirbuf.d_ino;
        strncpy(d.name, dirbuf.d_name, DIRSIZ);
        d.name[DIRSIZ] = '\0';
        return &d;
    }
    return NULL;
}