kernel.git/net/9p/client.c, branch linux-3.10.y

p9_client_readdir() fix

2017-06-20T12:04:52Z

commit 71d6ad08379304128e4bdfaf0b4185d54375423e upstream. Don't assume that server is sane and won't return more data than asked for. Signed-off-by: Al Viro Signed-off-by: Willy Tarreau

9p: forgetting to cancel request on interrupted zero-copy RPC

2015-08-03T16:29:47Z

commit a84b69cb6e0a41e86bc593904faa6def3b957343 upstream. If we'd already sent a request and decide to abort it, we *must* issue TFLUSH properly and not just blindly reuse the tag, or we'll get seriously screwed when response eventually arrives and we confuse it for response to later request that had reused the same tag. Signed-off-by: Al Viro Signed-off-by: Greg Kroah-Hartman

net/9p: Handle error in zero copy request correctly for 9p2000.u

2013-05-28T16:47:57Z

For zero copy request, error will be encoded in the user space buffer. So copy the error code correctly using copy_from_user. Here we use the extra bytes we allocate for zero copy request. If total error details are more than P9_ZC_HDR_SZ - 7 bytes, we return -EFAULT. The patch also avoid a memory allocation in the error path. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Eric Van Hensbergen

9p: Modify the stat structures to use kuid_t and kgid_t

2013-02-12T11:19:31Z

9p has thre strucrtures that can encode inode stat information. Modify all of those structures to contain kuid_t and kgid_t values. Modify he wire encoders and decoders of those structures to use 'u' and 'g' instead of 'd' in the format string where uids and gids are present. This results in all kuid and kgid conversion to and from on the wire values being performed by the same code in protocol.c where the client is known at the time of the conversion. Cc: Eric Van Hensbergen Cc: Ron Minnich Cc: Latchesar Ionkov Signed-off-by: Eric W. Biederman

9p: Transmit kuid and kgid values

2013-02-12T11:19:30Z

Modify the p9_client_rpc format specifiers of every function that directly transmits a uid or a gid from 'd' to 'u' or 'g' as appropriate. Modify those same functions to take kuid_t and kgid_t parameters instead of uid_t and gid_t parameters. Cc: Eric Van Hensbergen Cc: Ron Minnich Cc: Latchesar Ionkov Signed-off-by: Eric W. Biederman

net/9p: Check errno validity

2012-09-06T18:54:55Z

While working on a modified server I had the Linux clients crash a few times. This lead me to find this: Some error codes are directly extracted from the server replies. A malformed server reply could contain an invalid error code, with a very large value. If this value is then passed to ERR_PTR() it will not be properly detected as an error code by IS_ERR() and as a result the kernel will dereference an invalid pointer. This patch tries to avoid this. Signed-off-by: Simon Derr Signed-off-by: Eric Van Hensbergen

net/9p: Add force to cast of user pointer

2012-06-04T17:51:17Z

A recent commit that removed unnecessary casts of pointers to the same type uncovered a missing __force cast. Add it. Reported by: Ben Hutchings Signed-off-by: Joe Perches Signed-off-by: David S. Miller

net: Remove casts to same type

2012-06-04T15:45:11Z

Adding casts of objects to the same type is unnecessary and confusing for a human reader. For example, this cast: int y; int *p = (int *)&y; I used the coccinelle script below to find and remove these unnecessary casts. I manually removed the conversions this script produces of casts with __force and __user. @@ type T; T *p; @@ - (T *)p + p Signed-off-by: Joe Perches Signed-off-by: David S. Miller

net: cleanup unsigned to unsigned int

2012-04-15T16:44:40Z

Use of "unsigned int" is preferred to bare "unsigned" in net tree. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller

net/9p: handle flushed Tclunk/Tremove

2012-02-26T20:49:57Z

When a Tclunk or Tremove request is flushed, the fid is not freed on the server. p9_client_clunk() should retry once on interrupt, then if interrupted again, leak the fid for the duration of the connection. p9_client_remove() should call p9_client_clunk() on interrupt instead of unconditionally destroying the fid. Signed-off-by: Jim Garlick Signed-off-by: Eric Van Hensbergen