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[virtio-9p] Make rpath thread safe

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Current rpath inline function is heavily used in all system calls.
This function has a static buffer making it a non-thread safe function.
This patch introduces new thread-safe routine and makes use of it.

Signed-off-by: Venkateswararao Jujjuri "<jvrao@linux.vnet.ibm.com>
This commit is contained in:
Venkateswararao Jujjuri (JV) 2011-06-01 12:35:14 +05:30
parent 873c321393
commit faa44e3d3e
7 changed files with 98 additions and 92 deletions
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9
hw/9pfs/virtio-9p-xattr-user.c
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@ -21,6 +21,7 @@
static ssize_t mp_user_getxattr(FsContext *ctx, const char *path,
const char *name, void *value, size_t size)
{
char buffer[PATH_MAX];
if (strncmp(name, "user.virtfs.", 12) == 0) {
/*
* Don't allow fetch of user.virtfs namesapce
@ -29,7 +30,7 @@ static ssize_t mp_user_getxattr(FsContext *ctx, const char *path,
errno = ENOATTR;
return -1;
}
return lgetxattr(rpath(ctx, path), name, value, size);
return lgetxattr(rpath(ctx, path, buffer), name, value, size);
}
static ssize_t mp_user_listxattr(FsContext *ctx, const char *path,
@ -67,6 +68,7 @@ static ssize_t mp_user_listxattr(FsContext *ctx, const char *path,
static int mp_user_setxattr(FsContext *ctx, const char *path, const char *name,
void *value, size_t size, int flags)
{
char buffer[PATH_MAX];
if (strncmp(name, "user.virtfs.", 12) == 0) {
/*
* Don't allow fetch of user.virtfs namesapce
@ -75,12 +77,13 @@ static int mp_user_setxattr(FsContext *ctx, const char *path, const char *name,
errno = EACCES;
return -1;
}
return lsetxattr(rpath(ctx, path), name, value, size, flags);
return lsetxattr(rpath(ctx, path, buffer), name, value, size, flags);
}
static int mp_user_removexattr(FsContext *ctx,
const char *path, const char *name)
{
char buffer[PATH_MAX];
if (strncmp(name, "user.virtfs.", 12) == 0) {
/*
* Don't allow fetch of user.virtfs namesapce
@ -89,7 +92,7 @@ static int mp_user_removexattr(FsContext *ctx,
errno = EACCES;
return -1;
}
return lremovexattr(rpath(ctx, path), name);
return lremovexattr(rpath(ctx, path, buffer), name);
}
XattrOperations mapped_user_xattr = {