1 #include<stdio.h>
2 #include<unistd.h>
3 #include<sys/stat.h>
4 #include<sys/types.h>
5 #include<time.h>
6 #include<pwd.h>
7 #include<grp.h>
8 #include<glob.h>
9 #include<string.h>
10 #include<errno.h>
11 #include<dirent.h>
12 #define BUFSIZE 1024
13 int _myls_l(char *p);
14 int is_d(char *p)
15 {
16 char buf[BUFSIZE] = {};
17 struct stat mystat;
18 int ch;
19 char *chr = NULL;
20 int sum = 0;
21 glob_t glb;
22 struct stat block;
23 ch = lstat(p,&mystat);
24 if(ch == -1)
25 {
26 perror("lstat()");
27 return -1;
28 }
29 if(S_ISDIR(mystat.st_mode))
30 {
31 strcpy(buf,p);
32 strcat(buf,"/*");
33 glob(buf,0,NULL,&glb);
34 if(glob(buf,0,NULL,&glb) != 0)
35 {
36 fprintf(stderr,"glob() is failed");
37 return -1;
38 }
39 for(int i = 0;i < glb.gl_pathc;i++)
40 {
41 _myls_l((glb.gl_pathv)[i]);
42 chr = strrchr((glb.gl_pathv)[i],'/');
43 printf(" %s\n",chr+1);
44 lstat(glb.gl_pathv[i],&block);
45 if(lstat(glb.gl_pathv[i],&block) == -1)
46 {
47 perror("lstat()");
48 return -1;
49 }
50 sum += block.st_blocks;
51 }
52
53 globfree(&glb);
54 printf("总用量 %d \n",sum/2);
55 }
56 else
57 {
58 _myls_l(p);
59 printf("\n");
60 }
61 return 1;
62 }
63
64 int _myls_l(char *p)
65 {
66 struct group *grp = NULL;
67 struct tm *tim = NULL;
68 char buf[BUFSIZE] = {};
69 struct passwd *pwd = NULL;
70 struct stat tp;
71 int ch;
72 ch = lstat(p,&tp);
73 if(ch == -1)
74 {
75 perror("lstat()");
76 return -1;
77 }
78 //文件类型
79 switch(tp.st_mode & S_IFMT)
80 {
81 case S_IFSOCK:
82 printf("s");
83 break;
84 case S_IFLNK:
85 printf("l");
86 break;
87 case S_IFREG:
88 printf("-");
89 break;
90 case S_IFBLK:
91 printf("b");
92 break;
93 case S_IFDIR:
94 printf("d");
95 break;
96 default:
97 break;
98 }
99 //权限
100 if(tp.st_mode & S_IRUSR)
101 printf("r");
102 else
103 printf("-");
104 if(tp.st_mode & S_IWUSR)
105 printf("w");
106 else
107 printf("-");
108 if(tp.st_mode & S_IXUSR)
109 {
110 if(tp.st_mode & S_ISUID)
111 printf("s");
112 else
113 printf("x");
114 }
115 else
116 printf("-");
117 if(tp.st_mode & S_IRGRP)
118 printf("r");
119 else
120 printf("-");
121 if(tp.st_mode & S_IWGRP)
122 printf("r");
123 else
124 printf("-");
125 if(tp.st_mode & S_IXGRP)
126 {
127 if(tp.st_mode & S_ISGID)
128 printf("s");
129 else
130 printf("x");
131 }
132 else
133 printf("-");
134 if(tp.st_mode & S_IROTH)
135 printf("r");
136 else
137 printf("-");
138 if(tp.st_mode & S_IWOTH)
139 printf("w");
140 else
141 printf("-");
142 if(tp.st_mode & S_IXOTH)
143 {
144 if(tp.st_mode & S_ISVTX)
145 printf("t");
146 else
147 printf("x");
148 }
149 else
150 printf("-");
151 //硬链接
152 printf(" %ld",tp.st_nlink);
153
154 //拥有者
155 pwd = getpwuid(tp.st_uid);
156 printf(" %s",pwd->pw_name);
157
158 //所属组
159 grp = getgrgid(tp.st_gid);
160 printf(" %s",grp->gr_name);
161 printf(" %ld",tp.st_size);
162
163 //时间
164 tim = localtime(&tp.st_mtim.tv_sec);
165 strftime(buf,BUFSIZE,"%m月 %d %H:%M",tim);
166 printf(" %s",buf);
167
168
169 }
170
171 int _inode(char *p)
172 {
173 struct stat id;
174 lstat(p,&id);
175 if(lstat(p,&id) == -1)
176 {
177 perror("lstat()");
178 return -1;
179 }
180 printf(" %ld",id.st_ino);
181 return 1;
182 }
183 int _isd_ino(char *p)
184 {
185 char buf[BUFSIZE] = {};
186 struct stat mystat;
187 int ch;
188 char *chr;
189 glob_t glb;
190 ch = lstat(p,&mystat);
191 if(ch == -1)
192 {
193 perror("lstat()");
194 return -1;
195 }
196 if(S_ISDIR(mystat.st_mode))
197 {
198 strcpy(buf,p);
199 strcat(buf,"/*");
200 glob(buf,0,NULL,&glb);
201 if(glob(buf,0,NULL,&glb) != 0)
202 {
203 fprintf(stderr,"glob() is failed");
204 return -1;
205 }
206 for(int i = 0;i < glb.gl_pathc; i++)
207 {
208 _inode((glb.gl_pathv)[i]);
209 chr = strrchr((glb.gl_pathv)[i],'/');
210 printf(" %s",chr+1);
211 printf("\n");
212 }
213 globfree(&glb);
214 }
215 else
216 {
217 _inode(p);
218 printf(" %s\n",p);
219 }
220 return 1;
221 }
222
223 int myls_h(char *p)
224 {
225 struct stat mystat;
226 int ch;
227 char buf[BUFSIZE] = {};
228 glob_t glb;
229 char *chr = NULL;
230 ch = lstat(p,&mystat);
231 if(ch == -1)
232 {
233 perror("lstat()");
234 return -1;
235 }
236 if(S_ISDIR(mystat.st_mode))
237 {
238 strcpy(buf,p);
239 strcat(buf,"/*");
240 glob(buf,0,NULL,&glb);
241 if(glob(buf,0,NULL,&glb) != 0 )
242 {
243 fprintf(stderr,"glob() is failed");
244 return -1;
245 }
246 for(int i = 0;i < glb.gl_pathc;i++)
247 {
248 chr = strrchr((glb.gl_pathv)[i],'/');
249 printf("%s\n",chr+1);
250 }
251 globfree(&glb);
252 }
253 return 1;
254 }
255
256 int myls_a(char *p)
257 {
258 DIR *dp = NULL;
259 struct dirent *entry = NULL;
260 dp = opendir(p);
261 if(dp == NULL)
262 {
263 perror("opendir()");
264 return -1;
265 }
266 while(1)
267 {
268 entry = readdir(dp);
269 if(entry == NULL)
270 {
271 if(errno)
272 {
273 closedir(dp);
274 return -1;
275 }
276 break;
277 }
278 printf("%s",entry->d_name);
279 printf("\n");
280 }
281 closedir(dp);
282 return 1;
283 }
284 int main(int argc,char *argv[])
285 {
286 int ch;
287 int n;
288 char *optstring = "li:h:a:";
289 if(argc < 3)
290 return 1;
291 n = argc;
292 //printf("%d\n",n);
293 while(1)
294 {
295 ch = getopt(argc,argv,optstring);
296 if(ch == -1)
297 break;
298 switch(ch)
299 {
300 case 'a':
301 myls_a(argv[n-1]);
302 break;
303 case 'h':
304 myls_h(argv[n-1]);
305 break;
306 case 'l':
307 is_d(argv[n-1]);
308 // _myls_l(is_d(argv[2]));
309 break;
310 case 'i':
311 _isd_ino(argv[n-1]);
312 break;
313 //case 'l':
314 // is_d(argv[2]);
315 // _isd_ino(argv[2]);
316 // break;
317 case '?':
318 printf("i do not know");
319 break;
320 case 1:
321 printf("%s\n",argv[optind -1]);
322 break;
323 default:
324 break;
325 }
326 }
327 return 0;
328 }
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