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Introduce nat/linux-namespaces.[ch]

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This commit introduces new shared files nat/linux-namespaces.[ch]
containing code to support Linux namespaces that will be used by
both GDB and gdbserver.

gdb/ChangeLog:

	* configure.ac (AC_CHECK_FUNCS): Add setns.
	* config.in: Regenerate.
	* configure: Likewise.
	* nat/linux-namespaces.h: New file.
	* nat/linux-namespaces.c: Likewise.
	* Makefile.in (HFILES_NO_SRCDIR): Add nat/linux-namespaces.h.
	(linux-namespaces.o): New rule.
	* config/aarch64/linux.mh (NATDEPFILES): Add linux-namespaces.o.
	* config/alpha/alpha-linux.mh (NATDEPFILES): Likewise.
	* config/arm/linux.mh (NATDEPFILES): Likewise.
	* config/i386/linux.mh (NATDEPFILES): Likewise.
	* config/i386/linux64.mh (NATDEPFILES): Likewise.
	* config/ia64/linux.mh (NATDEPFILES): Likewise.
	* config/m32r/linux.mh (NATDEPFILES): Likewise.
	* config/m68k/linux.mh (NATDEPFILES): Likewise.
	* config/mips/linux.mh (NATDEPFILES): Likewise.
	* config/pa/linux.mh (NATDEPFILES): Likewise.
	* config/powerpc/linux.mh (NATDEPFILES): Likewise.
	* config/powerpc/ppc64-linux.mh (NATDEPFILES): Likewise.
	* config/powerpc/spu-linux.mh (NATDEPFILES): Likewise.
	* config/s390/linux.mh (NATDEPFILES): Likewise.
	* config/sparc/linux.mh (NATDEPFILES): Likewise.
	* config/sparc/linux64.mh (NATDEPFILES): Likewise.
	* config/tilegx/linux.mh (NATDEPFILES): Likewise.
	* config/xtensa/linux.mh (NATDEPFILES): Likewise.

gdb/gdbserver/ChangeLog:

	* configure.ac (AC_CHECK_FUNCS): Add setns.
	* config.in: Regenerate.
	* configure: Likewise.
	* Makefile.in (SFILES): Add nat/linux-namespaces.c.
	(linux-namespaces.o): New rule.
	* configure.srv (srv_linux_obj): Add linux-namespaces.o.
This commit is contained in:
Gary Benson 2015-06-10 14:28:43 +01:00
parent ca09583623
commit 4b8b5e7245
31 changed files with 1205 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
gdb/ChangeLog
View File

@ -1,3 +1,31 @@
2015-06-10 Gary Benson <gbenson@redhat.com>
* configure.ac (AC_CHECK_FUNCS): Add setns.
* config.in: Regenerate.
* configure: Likewise.
* nat/linux-namespaces.h: New file.
* nat/linux-namespaces.c: Likewise.
* Makefile.in (HFILES_NO_SRCDIR): Add nat/linux-namespaces.h.
(linux-namespaces.o): New rule.
* config/aarch64/linux.mh (NATDEPFILES): Add linux-namespaces.o.
* config/alpha/alpha-linux.mh (NATDEPFILES): Likewise.
* config/arm/linux.mh (NATDEPFILES): Likewise.
* config/i386/linux.mh (NATDEPFILES): Likewise.
* config/i386/linux64.mh (NATDEPFILES): Likewise.
* config/ia64/linux.mh (NATDEPFILES): Likewise.
* config/m32r/linux.mh (NATDEPFILES): Likewise.
* config/m68k/linux.mh (NATDEPFILES): Likewise.
* config/mips/linux.mh (NATDEPFILES): Likewise.
* config/pa/linux.mh (NATDEPFILES): Likewise.
* config/powerpc/linux.mh (NATDEPFILES): Likewise.
* config/powerpc/ppc64-linux.mh (NATDEPFILES): Likewise.
* config/powerpc/spu-linux.mh (NATDEPFILES): Likewise.
* config/s390/linux.mh (NATDEPFILES): Likewise.
* config/sparc/linux.mh (NATDEPFILES): Likewise.
* config/sparc/linux64.mh (NATDEPFILES): Likewise.
* config/tilegx/linux.mh (NATDEPFILES): Likewise.
* config/xtensa/linux.mh (NATDEPFILES): Likewise.
2015-06-10 Gary Benson <gbenson@redhat.com>
* utils.h (make_cleanup_close): Moved to common/filestuff.h.

7
gdb/Makefile.in
View File

@ -979,7 +979,8 @@ i386-linux-nat.h common/common-defs.h common/errors.h common/common-types.h \
common/common-debug.h common/cleanups.h common/gdb_setjmp.h \
common/common-exceptions.h target/target.h common/symbol.h \
common/common-regcache.h fbsd-tdep.h nat/linux-personality.h \
common/fileio.h nat/x86-linux.h nat/x86-linux-dregs.h
common/fileio.h nat/x86-linux.h nat/x86-linux-dregs.h \
nat/linux-namespaces.h
# Header files that already have srcdir in them, or which are in objdir.
@ -2319,6 +2320,10 @@ x86-linux-dregs.o: ${srcdir}/nat/x86-linux-dregs.c
$(COMPILE) $(srcdir)/nat/x86-linux-dregs.c
$(POSTCOMPILE)
linux-namespaces.o: ${srcdir}/nat/linux-namespaces.c
$(COMPILE) $(srcdir)/nat/linux-namespaces.c
$(POSTCOMPILE)
#
# gdb/tui/ dependencies
#

3
gdb/config.in
View File

@ -390,6 +390,9 @@
/* Define to 1 if you have the `setlocale' function. */
#undef HAVE_SETLOCALE
/* Define to 1 if you have the `setns' function. */
#undef HAVE_SETNS
/* Define to 1 if you have the `setpgid' function. */
#undef HAVE_SETPGID

2
gdb/config/aarch64/linux.mh
View File

@ -22,7 +22,7 @@ NAT_FILE= config/nm-linux.h
NATDEPFILES= inf-ptrace.o fork-child.o aarch64-linux-nat.o \
proc-service.o linux-thread-db.o linux-nat.o linux-fork.o \
linux-procfs.o linux-ptrace.o linux-osdata.o linux-waitpid.o \
linux-personality.o
linux-personality.o linux-namespaces.o
NAT_CDEPS = $(srcdir)/proc-service.list
LOADLIBES= -ldl $(RDYNAMIC)

2
gdb/config/alpha/alpha-linux.mh
View File

@ -3,7 +3,7 @@ NAT_FILE= config/nm-linux.h
NATDEPFILES= inf-ptrace.o alpha-linux-nat.o \
fork-child.o proc-service.o linux-thread-db.o \
linux-nat.o linux-osdata.o linux-fork.o linux-procfs.o linux-ptrace.o \
linux-waitpid.o linux-personality.o
linux-waitpid.o linux-personality.o linux-namespaces.o
NAT_CDEPS = $(srcdir)/proc-service.list
# The dynamically loaded libthread_db needs access to symbols in the

2
gdb/config/arm/linux.mh
View File

@ -4,7 +4,7 @@ NAT_FILE= config/nm-linux.h
NATDEPFILES= inf-ptrace.o fork-child.o arm-linux-nat.o \
proc-service.o linux-thread-db.o \
linux-nat.o linux-osdata.o linux-fork.o linux-procfs.o linux-ptrace.o \
linux-waitpid.o linux-personality.o
linux-waitpid.o linux-personality.o linux-namespaces.o
NAT_CDEPS = $(srcdir)/proc-service.list
LOADLIBES= -ldl $(RDYNAMIC)

2
gdb/config/i386/linux.mh
View File

@ -6,7 +6,7 @@ NATDEPFILES= inf-ptrace.o fork-child.o \
proc-service.o linux-thread-db.o \
linux-nat.o linux-osdata.o linux-fork.o linux-procfs.o linux-ptrace.o \
linux-btrace.o linux-waitpid.o linux-personality.o x86-linux.o \
x86-linux-dregs.o
x86-linux-dregs.o linux-namespaces.o
NAT_CDEPS = $(srcdir)/proc-service.list
# The dynamically loaded libthread_db needs access to symbols in the

2
gdb/config/i386/linux64.mh
View File

@ -6,7 +6,7 @@ NATDEPFILES= inf-ptrace.o fork-child.o \
proc-service.o linux-thread-db.o linux-fork.o \
linux-procfs.o linux-ptrace.o linux-btrace.o \
linux-waitpid.o linux-personality.o x86-linux.o \
x86-linux-dregs.o
x86-linux-dregs.o linux-namespaces.o
NAT_FILE= config/nm-linux.h
NAT_CDEPS = $(srcdir)/proc-service.list

3
gdb/config/ia64/linux.mh
View File

@ -6,7 +6,8 @@ NATDEPFILES= inf-ptrace.o fork-child.o \
proc-service.o linux-thread-db.o \
linux-nat.o linux-osdata.o linux-fork.o \
linux-personality.o \
linux-procfs.o linux-ptrace.o linux-waitpid.o
linux-procfs.o linux-ptrace.o linux-waitpid.o \
linux-namespaces.o
NAT_CDEPS = $(srcdir)/proc-service.list
LOADLIBES = -ldl $(RDYNAMIC)

2
gdb/config/m32r/linux.mh
View File

@ -4,7 +4,7 @@ NAT_FILE= config/nm-linux.h
NATDEPFILES= inf-ptrace.o fork-child.o \
m32r-linux-nat.o proc-service.o linux-thread-db.o \
linux-nat.o linux-osdata.o linux-fork.o linux-procfs.o linux-ptrace.o \
linux-waitpid.o linux-personality.o
linux-waitpid.o linux-personality.o linux-namespaces.o
NAT_CDEPS = $(srcdir)/proc-service.list
LOADLIBES= -ldl $(RDYNAMIC)

2
gdb/config/m68k/linux.mh
View File

@ -6,7 +6,7 @@ NATDEPFILES= inf-ptrace.o fork-child.o \
proc-service.o linux-thread-db.o \
linux-nat.o linux-osdata.o linux-fork.o linux-procfs.o linux-ptrace.o \
linux-personality.o \
linux-waitpid.o
linux-waitpid.o linux-namespaces.o
NAT_CDEPS = $(srcdir)/proc-service.list
# The dynamically loaded libthread_db needs access to symbols in the

2
gdb/config/mips/linux.mh
View File

@ -5,7 +5,7 @@ NATDEPFILES= inf-ptrace.o fork-child.o mips-linux-nat.o \
linux-nat.o linux-osdata.o linux-fork.o \
linux-procfs.o linux-ptrace.o linux-waitpid.o \
linux-personality.o \
mips-linux-watch.o
mips-linux-watch.o linux-namespaces.o
NAT_CDEPS = $(srcdir)/proc-service.list
LOADLIBES = -ldl $(RDYNAMIC)

2
gdb/config/pa/linux.mh
View File

@ -4,7 +4,7 @@ NATDEPFILES= inf-ptrace.o fork-child.o \
hppa-linux-nat.o proc-service.o linux-thread-db.o \
linux-nat.o linux-osdata.o linux-fork.o \
linux-procfs.o linux-ptrace.o linux-waitpid.o \
linux-personality.o
linux-personality.o linux-namespaces.o
NAT_CDEPS = $(srcdir)/proc-service.list
LOADLIBES = -ldl $(RDYNAMIC)

2
gdb/config/powerpc/linux.mh
View File

@ -6,7 +6,7 @@ NAT_FILE= config/nm-linux.h
NATDEPFILES= inf-ptrace.o fork-child.o \
ppc-linux-nat.o proc-service.o linux-thread-db.o \
linux-nat.o linux-osdata.o linux-fork.o linux-procfs.o linux-ptrace.o \
linux-waitpid.o linux-personality.o
linux-waitpid.o linux-personality.o linux-namespaces.o
NAT_CDEPS = $(srcdir)/proc-service.list
LOADLIBES = -ldl $(RDYNAMIC)

3
gdb/config/powerpc/ppc64-linux.mh
View File

@ -6,7 +6,8 @@ NAT_FILE= config/nm-linux.h
NATDEPFILES= inf-ptrace.o fork-child.o \
ppc-linux-nat.o proc-service.o linux-thread-db.o \
linux-nat.o linux-osdata.o linux-fork.o linux-procfs.o linux-ptrace.o \
linux-waitpid.o ppc-linux.o linux-personality.o
linux-waitpid.o ppc-linux.o linux-personality.o \
linux-namespaces.o
NAT_CDEPS = $(srcdir)/proc-service.list
# The PowerPC has severe limitations on TOC size, and uses them even

4
gdb/config/powerpc/spu-linux.mh
View File

@ -4,5 +4,5 @@
# PPU side of the Cell BE and debugging the SPU side.
NATDEPFILES = spu-linux-nat.o fork-child.o inf-ptrace.o \
linux-procfs.o linux-ptrace.o linux-waitpid.o linux-personality.o
linux-procfs.o linux-ptrace.o linux-waitpid.o \
linux-personality.o linux-namespaces.o

2
gdb/config/s390/linux.mh
View File

@ -4,6 +4,6 @@ NATDEPFILES= inf-ptrace.o fork-child.o s390-linux-nat.o \
linux-thread-db.o proc-service.o \
linux-nat.o linux-osdata.o linux-fork.o linux-procfs.o linux-ptrace.o \
linux-personality.o \
linux-waitpid.o
linux-waitpid.o linux-namespaces.o
NAT_CDEPS = $(srcdir)/proc-service.list
LOADLIBES = -ldl $(RDYNAMIC)

2
gdb/config/sparc/linux.mh
View File

@ -5,7 +5,7 @@ NATDEPFILES= sparc-nat.o sparc-linux-nat.o \
proc-service.o linux-thread-db.o \
linux-nat.o linux-osdata.o linux-fork.o \
linux-procfs.o linux-ptrace.o linux-waitpid.o \
linux-personality.o
linux-personality.o linux-namespaces.o
NAT_CDEPS = $(srcdir)/proc-service.list
# The dynamically loaded libthread_db needs access to symbols in the

2
gdb/config/sparc/linux64.mh
View File

@ -5,7 +5,7 @@ NATDEPFILES= sparc-nat.o sparc64-nat.o sparc64-linux-nat.o \
proc-service.o linux-thread-db.o \
linux-nat.o linux-osdata.o linux-fork.o \
linux-procfs.o linux-ptrace.o linux-waitpid.o \
linux-personality.o
linux-personality.o linux-namespaces.o
NAT_CDEPS = $(srcdir)/proc-service.list
# The dynamically loaded libthread_db needs access to symbols in the

2
gdb/config/tilegx/linux.mh
View File

@ -6,7 +6,7 @@ NATDEPFILES= inf-ptrace.o fork-child.o \
proc-service.o linux-thread-db.o \
linux-nat.o linux-osdata.o linux-fork.o \
linux-procfs.o linux-ptrace.o linux-waitpid.o \
linux-personality.o
linux-personality.o linux-namespaces.o
# The dynamically loaded libthread_db needs access to symbols in the
# gdb executable.

2
gdb/config/xtensa/linux.mh
View File

@ -5,7 +5,7 @@ NAT_FILE= config/nm-linux.h
NATDEPFILES= inf-ptrace.o fork-child.o xtensa-linux-nat.o \
linux-thread-db.o proc-service.o \
linux-nat.o linux-osdata.o linux-fork.o linux-procfs.o linux-ptrace.o \
linux-waitpid.o linux-personality.o
linux-waitpid.o linux-personality.o linux-namespaces.o
NAT_CDEPS = $(srcdir)/proc-service.list
LOADLIBES = -ldl $(RDYNAMIC)

2
gdb/configure vendored
View File

@ -10957,7 +10957,7 @@ for ac_func in getauxval getrusage getuid getgid \
sigaction sigprocmask sigsetmask socketpair \
ttrace wborder wresize setlocale iconvlist libiconvlist btowc \
setrlimit getrlimit posix_madvise waitpid \
ptrace64 sigaltstack mkdtemp
ptrace64 sigaltstack mkdtemp setns
do :
as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"

2
gdb/configure.ac
View File

@ -1331,7 +1331,7 @@ AC_CHECK_FUNCS([getauxval getrusage getuid getgid \
sigaction sigprocmask sigsetmask socketpair \
ttrace wborder wresize setlocale iconvlist libiconvlist btowc \
setrlimit getrlimit posix_madvise waitpid \
ptrace64 sigaltstack mkdtemp])
ptrace64 sigaltstack mkdtemp setns])
AM_LANGINFO_CODESET
GDB_AC_COMMON

9
gdb/gdbserver/ChangeLog
View File

@ -1,3 +1,12 @@
2015-06-10 Gary Benson <gbenson@redhat.com>
* configure.ac (AC_CHECK_FUNCS): Add setns.
* config.in: Regenerate.
* configure: Likewise.
* Makefile.in (SFILES): Add nat/linux-namespaces.c.
(linux-namespaces.o): New rule.
* configure.srv (srv_linux_obj): Add linux-namespaces.o.
2015-06-09 Gary Benson <gbenson@redhat.com>
* hostio.c (handle_open): Process mode argument with

5
gdb/gdbserver/Makefile.in
View File

@ -180,7 +180,7 @@ SFILES= $(srcdir)/gdbreplay.c $(srcdir)/inferiors.c $(srcdir)/dll.c \
$(srcdir)/common/common-debug.c $(srcdir)/common/cleanups.c \
$(srcdir)/common/common-exceptions.c $(srcdir)/symbol.c \
$(srcdir)/common/btrace-common.c \
$(srcdir)/common/fileio.c
$(srcdir)/common/fileio.c $(srcdir)/nat/linux-namespaces.c
DEPFILES = @GDBSERVER_DEPFILES@
@ -615,6 +615,9 @@ x86-linux.o: ../nat/x86-linux.c
x86-linux-dregs.o: ../nat/x86-linux-dregs.c
$(COMPILE) $<
$(POSTCOMPILE)
linux-namespaces.o: ../nat/linux-namespaces.c
$(COMPILE) $<
$(POSTCOMPILE)
aarch64.c : $(srcdir)/../regformats/aarch64.dat $(regdat_sh)
$(SHELL) $(regdat_sh) $(srcdir)/../regformats/aarch64.dat aarch64.c

3
gdb/gdbserver/config.in
View File

@ -186,6 +186,9 @@
/* Define to 1 if you have the `pwrite' function. */
#undef HAVE_PWRITE
/* Define to 1 if you have the `setns' function. */
#undef HAVE_SETNS
/* Define to 1 if you have the <sgtty.h> header file. */
#undef HAVE_SGTTY_H

2
gdb/gdbserver/configure vendored
View File

@ -5310,7 +5310,7 @@ fi
done
for ac_func in getauxval pread pwrite pread64
for ac_func in getauxval pread pwrite pread64 setns
do :
as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"

2
gdb/gdbserver/configure.ac
View File

@ -94,7 +94,7 @@ AC_CHECK_HEADERS(sgtty.h termio.h termios.h sys/reg.h string.h dnl
fcntl.h signal.h sys/file.h dnl
sys/ioctl.h netinet/in.h sys/socket.h netdb.h dnl
netinet/tcp.h arpa/inet.h)
AC_CHECK_FUNCS(getauxval pread pwrite pread64)
AC_CHECK_FUNCS(getauxval pread pwrite pread64 setns)
GDB_AC_COMMON

2
gdb/gdbserver/configure.srv
View File

@ -42,7 +42,7 @@ srv_amd64_linux_xmlfiles="i386/amd64-linux.xml i386/amd64-avx-linux.xml i386/amd
# Linux object files. This is so we don't have to repeat
# these files over and over again.
srv_linux_obj="linux-low.o linux-osdata.o linux-procfs.o linux-ptrace.o linux-waitpid.o linux-personality.o"
srv_linux_obj="linux-low.o linux-osdata.o linux-procfs.o linux-ptrace.o linux-waitpid.o linux-personality.o linux-namespaces.o"
# Input is taken from the "${target}" variable.

1050
gdb/nat/linux-namespaces.c Normal file
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File diff suppressed because it is too large Load Diff

76
gdb/nat/linux-namespaces.h Normal file
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@ -0,0 +1,76 @@
/* Linux namespaces(7) support.
Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef LINUX_NAMESPACES_H
#define LINUX_NAMESPACES_H
/* Set to nonzero to enable debugging of Linux namespaces code. */
extern int debug_linux_namespaces;
/* Enumeration of Linux namespace types. */
enum linux_ns_type
{
/* IPC namespace: System V IPC, POSIX message queues. */
LINUX_NS_IPC,
/* Mount namespace: mount points. */
LINUX_NS_MNT,
/* Network namespace: network devices, stacks, ports, etc. */
LINUX_NS_NET,
/* PID namespace: process IDs. */
LINUX_NS_PID,
/* User namespace: user and group IDs. */
LINUX_NS_USER,
/* UTS namespace: hostname and NIS domain name. */
LINUX_NS_UTS,
/* Number of Linux namespaces. */
NUM_LINUX_NS_TYPES
};
/* Return nonzero if process PID has the same TYPE namespace as the
calling process, or if the kernel does not support TYPE namespaces
(in which case there is only one TYPE namespace). Return zero if
the kernel supports TYPE namespaces and the two processes have
different TYPE namespaces. */
extern int linux_ns_same (pid_t pid, enum linux_ns_type type);
/* Like gdb_open_cloexec, but in the mount namespace of process
PID. */
extern int linux_mntns_open_cloexec (pid_t pid, const char *filename,
int flags, mode_t mode);
/* Like unlink(2), but in the mount namespace of process PID. */
extern int linux_mntns_unlink (pid_t pid, const char *filename);
/* Like readlink(2), but in the mount namespace of process PID. */
extern ssize_t linux_mntns_readlink (pid_t pid, const char *filename,
char *buf, size_t bufsiz);
#endif /* LINUX_NAMESPACES_H */