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Handle the memfd_create system call.

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git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14875
This commit is contained in:
Tom Hughes 2015-01-19 21:52:44 +00:00
parent 392c743fc2
commit 6504fa50c3
12 changed files with 39 additions and 11 deletions
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1
NEWS
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@ -103,6 +103,7 @@ where XXXXXX is the bug number as listed below.
342063 wrong format specifier for test mcblocklistsearch in gdbserver_tests
342221 socket connect false positive uninit memory for unknown af family
342795 Internal glibc __GI_mempcpy call should be intercepted
343012 Unhandled syscall 319 (memfd_create)
n-i-bz Provide implementations of certain compiler builtins to support
compilers who may not provide those
n-i-bz Old STABS code is still being compiled, but never used. Remove it.

1
coregrind/m_syswrap/priv_syswrap-linux.h
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@ -285,6 +285,7 @@ DECL_TEMPLATE(linux, sys_fanotify_mark);
// Linux-specific (new in Linux 3.17)
DECL_TEMPLATE(linux, sys_getrandom);
DECL_TEMPLATE(linux, sys_memfd_create);
/* ---------------------------------------------------------------------
Wrappers for sockets and ipc-ery. These are split into standalone

4
coregrind/m_syswrap/syswrap-amd64-linux.c
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@ -1078,8 +1078,8 @@ static SyscallTableEntry syscall_table[] = {
// LIN__(__NR_sched_getattr, sys_ni_syscall), // 315
// LIN__(__NR_renameat2, sys_ni_syscall), // 316
// LIN__(__NR_seccomp, sys_ni_syscall), // 317
LINXY(__NR_getrandom, sys_getrandom) // 318
// LIN__(__NR_memfd_create, sys_ni_syscall), // 319
LINXY(__NR_getrandom, sys_getrandom), // 318
LINXY(__NR_memfd_create, sys_memfd_create) // 319
// LIN__(__NR_kexec_file_load, sys_ni_syscall), // 320
// LIN__(__NR_bpf, sys_ni_syscall) // 321

3
coregrind/m_syswrap/syswrap-arm-linux.c
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@ -1215,7 +1215,8 @@ static SyscallTableEntry syscall_main_table[] = {
LINXY(__NR_open_by_handle_at, sys_open_by_handle_at),// 371
LINXY(__NR_clock_adjtime, sys_clock_adjtime), // 372
LINXY(__NR_sendmmsg, sys_sendmmsg), // 374
LINXY(__NR_getrandom, sys_getrandom) // 384
LINXY(__NR_getrandom, sys_getrandom), // 384
LINXY(__NR_memfd_create, sys_memfd_create) // 385
};

1
coregrind/m_syswrap/syswrap-arm64-linux.c
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@ -1037,6 +1037,7 @@ static SyscallTableEntry syscall_main_table[] = {
LINXY(__NR_process_vm_readv, sys_process_vm_readv), // 270
LINX_(__NR_process_vm_writev, sys_process_vm_writev), // 271
LINXY(__NR_getrandom, sys_getrandom), // 278
LINXY(__NR_memfd_create, sys_memfd_create), // 279
// The numbers below are bogus. (See comment further down.)
// When pulling entries above this line, change the numbers

20
coregrind/m_syswrap/syswrap-linux.c
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@ -3018,6 +3018,26 @@ POST(sys_getrandom)
POST_MEM_WRITE( ARG1, ARG2 );
}
PRE(sys_memfd_create)
{
PRINT("sys_memfd_create ( %#lx, %ld )" , ARG1,ARG2);
PRE_REG_READ2(int, "memfd_create",
char *, uname, unsigned int, flags);
PRE_MEM_RASCIIZ( "memfd_create(uname)", ARG1 );
}
POST(sys_memfd_create)
{
vg_assert(SUCCESS);
if (!ML_(fd_allowed)(RES, "memfd_create", tid, True)) {
VG_(close)(RES);
SET_STATUS_Failure( VKI_EMFILE );
} else {
if (VG_(clo_track_fds))
ML_(record_fd_open_nameless)(tid, RES);
}
}
/* ---------------------------------------------------------------------
utime wrapper
------------------------------------------------------------------ */

3
coregrind/m_syswrap/syswrap-mips32-linux.c
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@ -1118,7 +1118,8 @@ static SyscallTableEntry syscall_main_table[] = {
LINXY (__NR_process_vm_readv, sys_process_vm_readv), // 345
LINX_ (__NR_process_vm_writev, sys_process_vm_writev), // 346
//..
LINXY(__NR_getrandom, sys_getrandom) // 353
LINXY(__NR_getrandom, sys_getrandom), // 353
LINXY(__NR_memfd_create, sys_memfd_create) // 354
};
SyscallTableEntry* ML_(get_linux_syscall_entry) (UInt sysno)

3
coregrind/m_syswrap/syswrap-mips64-linux.c
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@ -910,7 +910,8 @@ static SyscallTableEntry syscall_main_table[] = {
LINXY (__NR_clock_adjtime, sys_clock_adjtime),
LINXY (__NR_process_vm_readv, sys_process_vm_readv),
LINX_ (__NR_process_vm_writev, sys_process_vm_writev),
LINXY(__NR_getrandom, sys_getrandom)
LINXY(__NR_getrandom, sys_getrandom),
LINXY(__NR_memfd_create, sys_memfd_create)
};
SyscallTableEntry * ML_(get_linux_syscall_entry) ( UInt sysno )

3
coregrind/m_syswrap/syswrap-ppc32-linux.c
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@ -1258,7 +1258,8 @@ static SyscallTableEntry syscall_table[] = {
LINXY(__NR_process_vm_readv, sys_process_vm_readv), // 351
LINX_(__NR_process_vm_writev, sys_process_vm_writev),// 352
LINXY(__NR_getrandom, sys_getrandom) // 359
LINXY(__NR_getrandom, sys_getrandom), // 359
LINXY(__NR_memfd_create, sys_memfd_create) // 360
};
SyscallTableEntry* ML_(get_linux_syscall_entry) ( UInt sysno )

3
coregrind/m_syswrap/syswrap-ppc64-linux.c
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@ -1157,7 +1157,8 @@ static SyscallTableEntry syscall_table[] = {
LINXY(__NR_process_vm_readv, sys_process_vm_readv), // 351
LINX_(__NR_process_vm_writev, sys_process_vm_writev),// 352
LINXY(__NR_getrandom, sys_getrandom) // 359
LINXY(__NR_getrandom, sys_getrandom), // 359
LINXY(__NR_memfd_create, sys_memfd_create) // 360
};
SyscallTableEntry* ML_(get_linux_syscall_entry) ( UInt sysno )

4
coregrind/m_syswrap/syswrap-s390x-linux.c
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@ -1050,9 +1050,9 @@ static SyscallTableEntry syscall_table[] = {
// ?????(__NR_sched_getattr, ), // 346
// ?????(__NR_renameat2, ), // 347
// ?????(__NR_seccomp, ), // 348
LINXY(__NR_getrandom, sys_getrandom) // 349
LINXY(__NR_getrandom, sys_getrandom), // 349
// ?????(__NR_memfd_create, ), // 350
LINXY(__NR_memfd_create, sys_memfd_create) // 350
};
SyscallTableEntry* ML_(get_linux_syscall_entry) ( UInt sysno )

4
coregrind/m_syswrap/syswrap-x86-linux.c
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@ -1821,8 +1821,8 @@ static SyscallTableEntry syscall_table[] = {
// LIN__(__NR_renameat2, sys_ni_syscall), // 353
// LIN__(__NR_seccomp, sys_ni_syscall), // 354
LINXY(__NR_getrandom, sys_getrandom) // 355
// LIN__(__NR_memfd_create, sys_ni_syscall), // 356
LINXY(__NR_getrandom, sys_getrandom), // 355
LINXY(__NR_memfd_create, sys_memfd_create) // 356
// LIN__(__NR_bpf, sys_ni_syscall) // 357
};