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paranoia about extension

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rsc 2006-05-04 19:10:11 +00:00
parent 1e22e8e414
commit f246629788
1 changed files with 6 additions and 1 deletions
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7
src/cmd/9pserve.c
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@ -10,7 +10,8 @@ enum
{
STACK = 32768,
NHASH = 31,
MAXMSG = 64 /* per connection */
MAXMSG = 64, /* per connection */
MAXMSGSIZE = 4*1024*1024
};
typedef struct Hash Hash;
@ -231,6 +232,8 @@ mainproc(void *v)
if(n != nn)
sysfatal("error writing Tversion: %r\n");
n = read9pmsg(0, vbuf, sizeof vbuf);
if(n < 0)
sysfatal("read9pmsg failure"):
if(convM2S(vbuf, n, &f) != n)
sysfatal("convM2S failure");
if(f.msize < msize)
@ -1220,6 +1223,8 @@ read9ppkt(Ioproc *io, int fd)
if(n != 4)
return nil;
n = GBIT32(buf);
if(n > MAXMSGSIZE)
return nil;
pkt = emalloc(n);
PBIT32(pkt, n);
nn = ioreadn(io, fd, pkt+4, n-4);