101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
|
/*
|
||
|
|
* trace/beauty/fcntl.c
|
||
|
|
*
|
||
|
|
* Copyright (C) 2017, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
|
||
|
|
*
|
||
|
|
* Released under the GPL v2. (and only v2, not any later version)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "trace/beauty/beauty.h"
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <uapi/linux/fcntl.h>
|
||
|
|
|
||
|
|
static size_t fcntl__scnprintf_getfd(unsigned long val, char *bf, size_t size)
|
||
|
|
{
|
||
|
|
return scnprintf(bf, size, "%s", val ? "CLOEXEC" : "0");
|
||
|
|
}
|
||
|
|
|
||
|
|
static size_t syscall_arg__scnprintf_fcntl_getfd(char *bf, size_t size, struct syscall_arg *arg)
|
||
|
|
{
|
||
|
|
return fcntl__scnprintf_getfd(arg->val, bf, size);
|
||
|
|
}
|
||
|
|
|
||
|
|
static size_t fcntl__scnprintf_getlease(unsigned long val, char *bf, size_t size)
|
||
|
|
{
|
||
|
|
static const char *fcntl_setlease[] = { "RDLCK", "WRLCK", "UNLCK", };
|
||
|
|
static DEFINE_STRARRAY(fcntl_setlease);
|
||
|
|
|
||
|
|
return strarray__scnprintf(&strarray__fcntl_setlease, bf, size, "%x", val);
|
||
|
|
}
|
||
|
|
|
||
|
|
static size_t syscall_arg__scnprintf_fcntl_getlease(char *bf, size_t size, struct syscall_arg *arg)
|
||
|
|
{
|
||
|
|
return fcntl__scnprintf_getlease(arg->val, bf, size);
|
||
|
|
}
|
||
|
|
|
||
|
|
size_t syscall_arg__scnprintf_fcntl_cmd(char *bf, size_t size, struct syscall_arg *arg)
|
||
|
|
{
|
||
|
|
if (arg->val == F_GETFL) {
|
||
|
|
syscall_arg__set_ret_scnprintf(arg, syscall_arg__scnprintf_open_flags);
|
||
|
|
goto mask_arg;
|
||
|
|
}
|
||
|
|
if (arg->val == F_GETFD) {
|
||
|
|
syscall_arg__set_ret_scnprintf(arg, syscall_arg__scnprintf_fcntl_getfd);
|
||
|
|
goto mask_arg;
|
||
|
|
}
|
||
|
|
if (arg->val == F_DUPFD_CLOEXEC || arg->val == F_DUPFD) {
|
||
|
|
syscall_arg__set_ret_scnprintf(arg, syscall_arg__scnprintf_fd);
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
if (arg->val == F_GETOWN) {
|
||
|
|
syscall_arg__set_ret_scnprintf(arg, syscall_arg__scnprintf_pid);
|
||
|
|
goto mask_arg;
|
||
|
|
}
|
||
|
|
if (arg->val == F_GETLEASE) {
|
||
|
|
syscall_arg__set_ret_scnprintf(arg, syscall_arg__scnprintf_fcntl_getlease);
|
||
|
|
goto mask_arg;
|
||
|
|
}
|
||
|
|
/*
|
||
|
|
* Some commands ignore the third fcntl argument, "arg", so mask it
|
||
|
|
*/
|
||
|
|
if (arg->val == F_GET_SEALS ||
|
||
|
|
arg->val == F_GETSIG) {
|
||
|
|
mask_arg:
|
||
|
|
arg->mask |= (1 << 2);
|
||
|
|
}
|
||
|
|
out:
|
||
|
|
return syscall_arg__scnprintf_strarrays(bf, size, arg);
|
||
|
|
}
|
||
|
|
|
||
|
|
size_t syscall_arg__scnprintf_fcntl_arg(char *bf, size_t size, struct syscall_arg *arg)
|
||
|
|
{
|
||
|
|
int cmd = syscall_arg__val(arg, 1);
|
||
|
|
|
||
|
|
if (cmd == F_DUPFD)
|
||
|
|
return syscall_arg__scnprintf_fd(bf, size, arg);
|
||
|
|
|
||
|
|
if (cmd == F_SETFD)
|
||
|
|
return fcntl__scnprintf_getfd(arg->val, bf, size);
|
||
|
|
|
||
|
|
if (cmd == F_SETFL)
|
||
|
|
return open__scnprintf_flags(arg->val, bf, size);
|
||
|
|
|
||
|
|
if (cmd == F_SETOWN)
|
||
|
|
return syscall_arg__scnprintf_pid(bf, size, arg);
|
||
|
|
|
||
|
|
if (cmd == F_SETLEASE)
|
||
|
|
return fcntl__scnprintf_getlease(arg->val, bf, size);
|
||
|
|
/*
|
||
|
|
* We still don't grab the contents of pointers on entry or exit,
|
||
|
|
* so just print them as hex numbers
|
||
|
|
*/
|
||
|
|
if (cmd == F_SETLK || cmd == F_SETLKW || cmd == F_GETLK ||
|
||
|
|
cmd == F_OFD_SETLK || cmd == F_OFD_SETLKW || cmd == F_OFD_GETLK ||
|
||
|
|
cmd == F_GETOWN_EX || cmd == F_SETOWN_EX ||
|
||
|
|
cmd == F_GET_RW_HINT || cmd == F_SET_RW_HINT ||
|
||
|
|
cmd == F_GET_FILE_RW_HINT || cmd == F_SET_FILE_RW_HINT)
|
||
|
|
return syscall_arg__scnprintf_hex(bf, size, arg);
|
||
|
|
|
||
|
|
return syscall_arg__scnprintf_long(bf, size, arg);
|
||
|
|
}
|