75 lines
1.2 KiB
C
75 lines
1.2 KiB
C
#include "lib.h"
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#include <string.h>
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#include "sys9.h"
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#include "dir.h"
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#define nil ((void*)0)
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static char nullstring[] = "";
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uint
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_convM2D(uchar *buf, uint nbuf, Dir *d, char *strs)
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{
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uchar *p, *ebuf;
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char *sv[4];
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int i, ns, nsv[4];
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p = buf;
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ebuf = buf + nbuf;
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p += BIT16SZ; /* ignore size */
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d->type = GBIT16(p);
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p += BIT16SZ;
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d->dev = GBIT32(p);
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p += BIT32SZ;
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d->qid.type = GBIT8(p);
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p += BIT8SZ;
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d->qid.vers = GBIT32(p);
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p += BIT32SZ;
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d->qid.path = GBIT64(p);
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p += BIT64SZ;
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d->mode = GBIT32(p);
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p += BIT32SZ;
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d->atime = GBIT32(p);
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p += BIT32SZ;
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d->mtime = GBIT32(p);
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p += BIT32SZ;
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d->length = GBIT64(p);
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p += BIT64SZ;
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d->name = nil;
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d->uid = nil;
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d->gid = nil;
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d->muid = nil;
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for(i = 0; i < 4; i++){
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if(p + BIT16SZ > ebuf)
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return 0;
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ns = GBIT16(p);
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p += BIT16SZ;
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if(p + ns > ebuf)
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return 0;
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if(strs){
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nsv[i] = ns;
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sv[i] = strs;
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memmove(strs, p, ns);
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strs += ns;
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*strs++ = '\0';
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}
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p += ns;
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}
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if(strs){
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d->name = sv[0];
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d->uid = sv[1];
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d->gid = sv[2];
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d->muid = sv[3];
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}else{
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d->name = nullstring;
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d->uid = nullstring;
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d->gid = nullstring;
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d->muid = nullstring;
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}
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return p - buf;
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}
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