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sockets: Decode kernel dev_t into stat's one

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Unix diag and stat report dev_t-s in different formats. Cast one to
another when comparing in unix dumping.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
This commit is contained in:
Pavel Emelyanov
2012-02-08 16:09:04 +04:00
committed by Cyrill Gorcunov
parent 02c8793c6e
commit 82a8a8ff95
2 changed files with 25 additions and 1 deletions
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21
include/util.h
View File

@@ -264,4 +264,25 @@ FILE *fopen_proc(int pid_dir_fd, char *fmt, ...);
#define pr_img_head(type, ...) pr_info("\n"#type __VA_ARGS__ "\n----------------\n")
#define pr_img_tail(type) pr_info("----------------\n")
#define KDEV_MINORBITS 20
#define KDEV_MINORMASK ((1UL << KDEV_MINORBITS) - 1)
static inline u32 kdev_major(u32 kdev)
{
return kdev >> KDEV_MINORBITS;
}
static inline u32 kdev_minor(u32 kdev)
{
return kdev & KDEV_MINORMASK;
}
static inline dev_t kdev_to_odev(u32 kdev)
{
/*
* New kernels envcode devices in a new form
*/
return (kdev_major(kdev) << 8) | kdev_minor(kdev);
}
#endif /* UTIL_H_ */

5
sockets.c
View File

@@ -466,7 +466,10 @@ static int unix_collect_one(struct unix_diag_msg *m, struct rtattr **tb)
}
if ((st.st_ino != uv->udiag_vfs_ino) ||
(st.st_dev != uv->udiag_vfs_dev)) {
(st.st_dev != kdev_to_odev(uv->udiag_vfs_dev))) {
pr_info("unix: Dropping path for unlinked bound sk %x.%x real %x.%x\n",
(int)st.st_dev, (int)st.st_ino,
(int)uv->udiag_vfs_dev, (int)uv->udiag_vfs_ino);
/*
* When a listen socket is bound to
* unlinked file, we just drop his name,