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9pfuse: better handling of SETXATTR (sqweek)

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This commit is contained in:
Russ Cox 2008-07-04 03:41:19 -04:00
parent 4712e22300
commit 869875b48b
1 changed files with 8 additions and 5 deletions
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13
src/cmd/9pfuse/fuse.c
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@ -45,7 +45,7 @@ FuseMsg*
readfusemsg(void)
{
FuseMsg *m;
int n;
int n, nn;
m = allocfusemsg();
errno = 0;
@ -173,10 +173,13 @@ readfusemsg(void)
goto bad;
break;
case FUSE_SETXATTR:
/* struct and two strings */
if(m->hdr->len <= sizeof(struct fuse_setxattr_in)
|| ((char*)m->tx)[m->hdr->len-1] != 0
|| memchr((uchar*)m->tx+sizeof(struct fuse_setxattr_in), 0, m->hdr->len-sizeof(struct fuse_setxattr_in)-1) == 0)
/* struct, one string, and one binary blob */
if(m->hdr->len <= sizeof(struct fuse_setxattr_in))
goto bad;
nn = ((struct fuse_setxattr_in*)m->tx)->size;
if(m->hdr->len < sizeof(struct fuse_setxattr_in)+nn+1)
goto bad;
if(((char*)m->tx)[m->hdr->len-nn-1] != 0)
goto bad;
break;
case FUSE_GETXATTR: