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138 lines
3.5 KiB
138 lines
3.5 KiB
/* Test for getdents().
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* Just tests whatever FS the test is executed from.
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*
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* This test creates lots of nodes of various types, verifies that readdir()
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* (and so getdents()) returns all of them exactly once, and nothing else
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* (except for "." and ".."), and verifies the struct dirents are correct.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <dirent.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "common.h"
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#define FILETYPES 6
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#define LOOPS 30
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struct filetype {
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char *fnbase; /* type-unique base name */
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int dt; /* dirent type that getdents() should return */
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mode_t modebit; /* mode bit unique to this type */
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} filetypes[FILETYPES] = {
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{ "fifo", DT_FIFO, S_IFIFO },
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{ "chr", DT_CHR, S_IFCHR },
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{ "dir", DT_DIR, S_IFDIR },
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{ "blk", DT_BLK, S_IFBLK },
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{ "reg", DT_REG, S_IFREG },
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{ "lnk", DT_LNK, S_IFLNK },
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};
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int seen[FILETYPES][LOOPS];
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/* create a node named 'f' using code 'call'. check it doesn't exist
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* before hand, and does exist afterwards, and has the expected modebit.
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*/
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#define CR(f, call, modebit) do { \
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struct stat sb; \
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if(lstat(f, &sb) >= 0) { e(1); } \
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if((call) < 0) { e(2); } \
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if(lstat(f, &sb) < 0) { e(3); } \
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if(!(sb.st_mode & (modebit))) { e(4); } \
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} while(0)
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int
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main(int argc, char **argv)
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{
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int i, t;
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DIR *dir;
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struct dirent *de;
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start(78);
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/* create contents */
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for(i = 0; i < LOOPS; i++) {
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for(t = 0; t < FILETYPES; t++) {
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int c;
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char fn[2000];
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mode_t m = filetypes[t].modebit;
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/* think of a filename; do varying lengths to check
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* dirent record length alignment issues
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*/
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snprintf(fn, sizeof(fn), "%d.%d.%d.", t, filetypes[t].dt, i);
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for(c = 0; c < i; c++) strcat(fn, "x");
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/* create the right type */
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switch(filetypes[t].dt) {
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case DT_FIFO: CR(fn, mknod(fn, 0600|S_IFIFO, 0), m); break;
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case DT_CHR: CR(fn, mknod(fn, 0600|S_IFCHR, 0), m); break;
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case DT_BLK: CR(fn, mknod(fn, 0600|S_IFBLK, 0), m); break;
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case DT_REG: CR(fn, mknod(fn, 0600|S_IFREG, 0), m); break;
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case DT_DIR: CR(fn, mkdir(fn, 0600), m); break;
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case DT_LNK: CR(fn, symlink("dest", fn), m); break;
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default: e(10); break;
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}
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}
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}
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/* Verify that readdir() returns dirent structs with reasonable contents */
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if(!(dir = opendir("."))) { e(20); return 1; }
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while((de = readdir(dir))) {
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int dt;
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struct stat sb;
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if(!strcmp(de->d_name, ".")) continue;
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if(!strcmp(de->d_name, "..")) continue;
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if(sscanf(de->d_name, "%d.%d.%d", &t, &dt, &i) != 3) {
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e(30);
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continue;
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}
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/* sanity check on filename numbers */
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if(t < 0 || dt < 0 || i < 0) { e(31); continue; }
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if(t >= FILETYPES || i >= LOOPS) { e(32); continue; }
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if(seen[t][i]) { e(33); continue; }
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seen[t][i] = 1;
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if(filetypes[t].dt != dt) { e(34); continue; }
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if(lstat(de->d_name, &sb) < 0) { e(35); continue; }
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if(!(sb.st_mode & filetypes[t].modebit)) { e(36); continue; }
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/* Now we know this file is ours and has the expected type;
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* now we can verify the contents of the dirent struct. d_name
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* is OK because sscanf and stat worked on it.
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*/
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if(de->d_type != dt) { e(37); }
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if(de->d_fileno != sb.st_ino) { e(38); }
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if(de->d_namlen != strlen(de->d_name)) { e(39); }
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if(de->d_reclen != _DIRENT_RECLEN(de, de->d_namlen)) { e(40); }
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}
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if(closedir(dir) < 0) e(50);
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/* Verify that we have seen all files we expected to see. */
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for(i = 0; i < LOOPS; i++) {
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for(t = 0; t < FILETYPES; t++) {
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if(!seen[t][i]) { e(60); break; }
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}
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}
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quit();
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}
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