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Annotation of researchv10no/cmd/nupas/libc/v9dirsel.c, revision 1.1.1.1

1.1       root        1: #include <sys/types.h>
                      2: #include <ndir.h>
                      3: #include <sys/stat.h>
                      4: #include "dirsel.h"
                      5: 
                      6: /* almost like 4.2 scandir(), but the returned structs are different */
                      7: #define MAXENTS 2000   /* hope we don't find a dir with more than MAXENTS entries */
                      8: 
                      9: int
                     10: dirsel(dirname, pents, select, compare)
                     11:        char *dirname;
                     12:        dirent **pents;
                     13:        int (*select)();
                     14:        int (*compare)();
                     15: {
                     16:        dirent *ep;
                     17:        DIR *ddp;
                     18:        struct direct *dp;
                     19:        struct stat statbuf;
                     20:        unsigned long starttime;
                     21:        int nents=0;
                     22:        char fullname[MAXNAMLEN+1];
                     23:        char *p;
                     24: 
                     25:        ddp=opendir(dirname);
                     26:        strcpy(fullname, dirname);
                     27:        p= &fullname[strlen(dirname)];
                     28:        *p++ = '/';
                     29:        *p='\0';
                     30:        if (ddp==0)
                     31:                return 0;
                     32:        starttime=(unsigned long)time((long *)0);
                     33:        *pents=ep=(dirent *)malloc(MAXENTS * sizeof(dirent));
                     34:        while ((dp=readdir(ddp))!=0){
                     35:                strcpy(p, dp->d_name);
                     36:                if (stat(fullname, &statbuf)!=0)
                     37:                        continue;       /* shouldn't happen */
                     38:                ep->name=(char *)malloc(dp->d_namlen+1);
                     39:                strcpy(ep->name, dp->d_name);
                     40:                ep->namelen=dp->d_namlen;
                     41:                ep->isdir=((statbuf.st_mode&S_IFDIR) != 0);
                     42:                ep->age=(long)(starttime-(unsigned long)statbuf.st_mtime);
                     43:                if (select && !(*select)(ep))
                     44:                        continue;       /* don't count this entry */
                     45:                ep++, nents++;
                     46:                if (nents==MAXENTS)
                     47:                        break;  /* could realloc */
                     48:        }
                     49:        closedir(ddp);
                     50:        if (nents>1 && compare)
                     51:                qsort(*pents, nents, sizeof(dirent), compare);
                     52:        return nents;
                     53: }

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