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Name	Size	Permission
aux_syscalls.stp	5.41 KB	-rw-r--r--
sysc_compat_fadvise64.stp	6.43 KB	-rw-r--r--
sysc_compat_fallocate.stp	3.14 KB	-rw-r--r--
sysc_compat_ftruncate64.stp	1.78 KB	-rw-r--r--
sysc_compat_lookup_dcookie.stp	3.02 KB	-rw-r--r--
sysc_compat_readahead.stp	1.87 KB	-rw-r--r--
sysc_compat_truncate64.stp	1.83 KB	-rw-r--r--
sysc_execve.stp	4.66 KB	-rw-r--r--
sysc_getresgid16.stp	1.78 KB	-rw-r--r--
sysc_getresuid16.stp	1.66 KB	-rw-r--r--
sysc_ipc.stp	1.39 KB	-rw-r--r--
sysc_mmap.stp	3.22 KB	-rw-r--r--
sysc_mmap2.stp	3.06 KB	-rw-r--r--
sysc_sigaltstack.stp	2.97 KB	-rw-r--r--
sysc_sysctl32.stp	1.12 KB	-rw-r--r--
syscall_num.stp	51.66 KB	-rw-r--r--

Code Editor : sysc_compat_readahead.stp

# readahead __________________________________________________
#
# asmlinkage ssize_t
# compat_ssize_t sys32_readahead(int fd, u32 offhi, u32 offlo, s32 count)
# COMPAT_SYSCALL_DEFINE4(s390_readahead, int, fd, u32, high, u32, low,
#			 s32, count)
#

@define _SYSCALL_COMPAT_READAHEAD_NAME
%(
	name = "readahead"
%)

@define _SYSCALL_COMPAT_READAHEAD_ARGSTR
%(
	argstr = sprintf("%d, %d, %u", fd, offset, count)
%)

probe syscall.compat_readahead = dw_syscall.compat_readahead !,
                                 nd_syscall.compat_readahead ? {}
probe syscall.compat_readahead.return = dw_syscall.compat_readahead.return !,
                                        nd_syscall.compat_readahead.return ? {}

# dw_compat_readahead _____________________________________________________

probe dw_syscall.compat_readahead = kernel.function("sys32_readahead").call ?,
	kernel.function("compat_sys_s390_readahead").call ?
{
	@_SYSCALL_COMPAT_READAHEAD_NAME
	fd = __int32($fd)
	offset = ((@choose_defined($offhi, $high) << 32)
		  | __uint32(@choose_defined($offlo, $low)))
	count = __uint32($count)
	@_SYSCALL_COMPAT_READAHEAD_ARGSTR
}
probe dw_syscall.compat_readahead.return =
	kernel.function("sys32_readahead").return ?,
	kernel.function("compat_sys_s390_readahead").return ?
{
	@_SYSCALL_COMPAT_READAHEAD_NAME
	@SYSC_RETVALSTR($return)
}

# nd_compat_readahead _____________________________________________________

probe nd_syscall.compat_readahead = kprobe.function("sys32_readahead") ?,
	kprobe.function("compat_sys_s390_readahead") ?
{
	@_SYSCALL_COMPAT_READAHEAD_NAME
	asmlinkage()
	fd = int_arg(1)
	offset = ((uint_arg(2) << 32) | uint_arg(3))
	count = ulong_arg(4)
	@_SYSCALL_COMPAT_READAHEAD_ARGSTR
}
probe nd_syscall.compat_readahead.return =
	kprobe.function("sys32_readahead").return ?,
	kprobe.function("compat_sys_s390_readahead").return ?
{
	@_SYSCALL_COMPAT_READAHEAD_NAME
	@SYSC_RETVALSTR(returnval())
}

${this.title}

Code Editor : sysc_compat_readahead.stp