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In the shm_open() and shm_unlink() syscalls, export the path to KTR.

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MFC after:	1 week
This commit is contained in:
Rui Paulo 2014-08-01 23:29:04 +00:00
parent 777d35f477
commit 551a78956c
1 changed files with 12 additions and 2 deletions
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14
sys/kern/uipc_shm.c
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@ -45,6 +45,7 @@
__FBSDID("$FreeBSD$");
#include "opt_capsicum.h"
#include "opt_ktrace.h"
#include <sys/param.h>
#include <sys/capsicum.h>
@ -53,6 +54,9 @@ __FBSDID("$FreeBSD$");
#include <sys/filedesc.h>
#include <sys/fnv_hash.h>
#include <sys/kernel.h>
#include <sys/uio.h>
#include <sys/signal.h>
#include <sys/ktrace.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mman.h>
@ -727,7 +731,10 @@ sys_shm_open(struct thread *td, struct shm_open_args *uap)
} else {
path = malloc(MAXPATHLEN, M_SHMFD, M_WAITOK);
error = copyinstr(uap->path, path, MAXPATHLEN, NULL);
#ifdef KTRACE
if (error == 0 && KTRPOINT(curthread, KTR_NAMEI))
ktrnamei(path);
#endif
/* Require paths to start with a '/' character. */
if (error == 0 && path[0] != '/')
error = EINVAL;
@ -825,7 +832,10 @@ sys_shm_unlink(struct thread *td, struct shm_unlink_args *uap)
free(path, M_TEMP);
return (error);
}
#ifdef KTRACE
if (KTRPOINT(curthread, KTR_NAMEI))
ktrnamei(path);
#endif
fnv = fnv_32_str(path, FNV1_32_INIT);
sx_xlock(&shm_dict_lock);
error = shm_remove(path, fnv, td->td_ucred);