Introduce nat/linux-namespaces.[ch]

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.

18 files changed, 21 insertions, 19 deletions

diff --git a/gdb/config/aarch64/linux.mh b/gdb/config/aarch64/linux.mh
index 7f96e4d..6a8aa7d 100644
--- a/gdb/config/aarch64/linux.mh
+++ b/gdb/config/aarch64/linux.mh
@@ -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)
diff --git a/gdb/config/alpha/alpha-linux.mh b/gdb/config/alpha/alpha-linux.mh
index 2ea02a1..4991dd2 100644
--- a/gdb/config/alpha/alpha-linux.mh
+++ b/gdb/config/alpha/alpha-linux.mh
@@ -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
diff --git a/gdb/config/arm/linux.mh b/gdb/config/arm/linux.mh
index 549bf42..f0c5967 100644
--- a/gdb/config/arm/linux.mh
+++ b/gdb/config/arm/linux.mh
@@ -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)
diff --git a/gdb/config/i386/linux.mh b/gdb/config/i386/linux.mh
index 9be2c5f..421c56f 100644
--- a/gdb/config/i386/linux.mh
+++ b/gdb/config/i386/linux.mh
@@ -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
diff --git a/gdb/config/i386/linux64.mh b/gdb/config/i386/linux64.mh
index 224a2a9..04cbb95 100644
--- a/gdb/config/i386/linux64.mh
+++ b/gdb/config/i386/linux64.mh
@@ -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
 
diff --git a/gdb/config/ia64/linux.mh b/gdb/config/ia64/linux.mh
index 9dce22b..b05f834 100644
--- a/gdb/config/ia64/linux.mh
+++ b/gdb/config/ia64/linux.mh
@@ -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)
diff --git a/gdb/config/m32r/linux.mh b/gdb/config/m32r/linux.mh
index 6b810e6..277d8bd 100644
--- a/gdb/config/m32r/linux.mh
+++ b/gdb/config/m32r/linux.mh
@@ -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)
diff --git a/gdb/config/m68k/linux.mh b/gdb/config/m68k/linux.mh
index f3b3baa..60d5ce4 100644
--- a/gdb/config/m68k/linux.mh
+++ b/gdb/config/m68k/linux.mh
@@ -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
diff --git a/gdb/config/mips/linux.mh b/gdb/config/mips/linux.mh
index d6a802f..11ff903 100644
--- a/gdb/config/mips/linux.mh
+++ b/gdb/config/mips/linux.mh
@@ -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)
diff --git a/gdb/config/pa/linux.mh b/gdb/config/pa/linux.mh
index 9539b64..1b73ecd 100644
--- a/gdb/config/pa/linux.mh
+++ b/gdb/config/pa/linux.mh
@@ -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)
diff --git a/gdb/config/powerpc/linux.mh b/gdb/config/powerpc/linux.mh
index 76e62c0..f4a52c3 100644
--- a/gdb/config/powerpc/linux.mh
+++ b/gdb/config/powerpc/linux.mh
@@ -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)
diff --git a/gdb/config/powerpc/ppc64-linux.mh b/gdb/config/powerpc/ppc64-linux.mh
index 7eb6507..580eb1f 100644
--- a/gdb/config/powerpc/ppc64-linux.mh
+++ b/gdb/config/powerpc/ppc64-linux.mh
@@ -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
diff --git a/gdb/config/powerpc/spu-linux.mh b/gdb/config/powerpc/spu-linux.mh
index d44aeeb..9205b62 100644
--- a/gdb/config/powerpc/spu-linux.mh
+++ b/gdb/config/powerpc/spu-linux.mh
@@ -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
diff --git a/gdb/config/s390/linux.mh b/gdb/config/s390/linux.mh
index e1ad899..4a137cd 100644
--- a/gdb/config/s390/linux.mh
+++ b/gdb/config/s390/linux.mh
@@ -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)
diff --git a/gdb/config/sparc/linux.mh b/gdb/config/sparc/linux.mh
index bd7fc86..385f640 100644
--- a/gdb/config/sparc/linux.mh
+++ b/gdb/config/sparc/linux.mh
@@ -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
diff --git a/gdb/config/sparc/linux64.mh b/gdb/config/sparc/linux64.mh
index 86f984f..8df0de1 100644
--- a/gdb/config/sparc/linux64.mh
+++ b/gdb/config/sparc/linux64.mh
@@ -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
diff --git a/gdb/config/tilegx/linux.mh b/gdb/config/tilegx/linux.mh
index b5edcd4..ec648d3 100644
--- a/gdb/config/tilegx/linux.mh
+++ b/gdb/config/tilegx/linux.mh
@@ -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.
diff --git a/gdb/config/xtensa/linux.mh b/gdb/config/xtensa/linux.mh
index b4e59b3..d5b8f91 100644
--- a/gdb/config/xtensa/linux.mh
+++ b/gdb/config/xtensa/linux.mh
@@ -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)