Improve errExit error messages

Changes:

* Move msg to the end of errExit (right before perror(3p))
* Include the full file path (within the repository)
* Add "()" to function name for clarity

Before:

    Error malloc: main.c:123 main: Cannot allocate memory

After:

    Error src/firejail/main.c:123 main(): malloc: Cannot allocate memory

Note: This clarifies which is the exact file that the error message
comes from, as there are many source files with the same name.  For
example:

    $ git ls-files 'src/*/main.c' | wc -l
    20

26 files changed, 27 insertions, 1 deletions

diff --git a/src/etc-cleanup/Makefile b/src/etc-cleanup/Makefile
index c3c482bdb..296ed41d8 100644
--- a/src/etc-cleanup/Makefile
+++ b/src/etc-cleanup/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/etc-cleanup
 PROG = etc-cleanup
 TARGET = $(PROG)
 
diff --git a/src/fbuilder/Makefile b/src/fbuilder/Makefile
index 634bf725f..1f6a28780 100644
--- a/src/fbuilder/Makefile
+++ b/src/fbuilder/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/fbuilder
 PROG = fbuilder
 TARGET = $(PROG)
 
diff --git a/src/fcopy/Makefile b/src/fcopy/Makefile
index a3c4abe9d..f82d3a073 100644
--- a/src/fcopy/Makefile
+++ b/src/fcopy/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/fcopy
 PROG = fcopy
 TARGET = $(PROG)
 
diff --git a/src/fids/Makefile b/src/fids/Makefile
index 76388a03d..c03740e3d 100644
--- a/src/fids/Makefile
+++ b/src/fids/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/fids
 PROG = fids
 TARGET = $(PROG)
 
diff --git a/src/firecfg/Makefile b/src/firecfg/Makefile
index de4639ab6..322ce3e3f 100644
--- a/src/firecfg/Makefile
+++ b/src/firecfg/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/firecfg
 PROG = firecfg
 TARGET = $(PROG)
 
diff --git a/src/firejail/Makefile b/src/firejail/Makefile
index d3a4b4f81..a817b1757 100644
--- a/src/firejail/Makefile
+++ b/src/firejail/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/firejail
 PROG = firejail
 TARGET = $(PROG)
 
diff --git a/src/firemon/Makefile b/src/firemon/Makefile
index 09387f3eb..649bad0af 100644
--- a/src/firemon/Makefile
+++ b/src/firemon/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/firemon
 PROG = firemon
 TARGET = $(PROG)
 
diff --git a/src/fldd/Makefile b/src/fldd/Makefile
index 7fec70a33..00173d18e 100644
--- a/src/fldd/Makefile
+++ b/src/fldd/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/fldd
 PROG = fldd
 TARGET = $(PROG)
 
diff --git a/src/fnet/Makefile b/src/fnet/Makefile
index 50bfdfffd..04a200951 100644
--- a/src/fnet/Makefile
+++ b/src/fnet/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/fnet
 PROG = fnet
 TARGET = $(PROG)
 
diff --git a/src/fnetfilter/Makefile b/src/fnetfilter/Makefile
index 156af3ed0..d38185fb1 100644
--- a/src/fnetfilter/Makefile
+++ b/src/fnetfilter/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/fnetfilter
 PROG = fnetfilter
 TARGET = $(PROG)
 
diff --git a/src/fnettrace-dns/Makefile b/src/fnettrace-dns/Makefile
index bbd4772e2..fb1054261 100644
--- a/src/fnettrace-dns/Makefile
+++ b/src/fnettrace-dns/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/fnettrace-dns
 PROG = fnettrace-dns
 TARGET = $(PROG)
 
diff --git a/src/fnettrace-icmp/Makefile b/src/fnettrace-icmp/Makefile
index 0d26dc2fc..4791e0b9f 100644
--- a/src/fnettrace-icmp/Makefile
+++ b/src/fnettrace-icmp/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/fnettrace-icmp
 PROG = fnettrace-icmp
 TARGET = $(PROG)
 
diff --git a/src/fnettrace-sni/Makefile b/src/fnettrace-sni/Makefile
index 554741fc8..09a444db0 100644
--- a/src/fnettrace-sni/Makefile
+++ b/src/fnettrace-sni/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/fnettrace-sni
 PROG = fnettrace-sni
 TARGET = $(PROG)
 
diff --git a/src/fnettrace/Makefile b/src/fnettrace/Makefile
index 94381d299..fe74afda2 100644
--- a/src/fnettrace/Makefile
+++ b/src/fnettrace/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/fnettrace
 PROG = fnettrace
 TARGET = $(PROG)
 
diff --git a/src/fsec-optimize/Makefile b/src/fsec-optimize/Makefile
index 5a14726a0..12ac5f1a9 100644
--- a/src/fsec-optimize/Makefile
+++ b/src/fsec-optimize/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/fsec-optimize
 PROG = fsec-optimize
 TARGET = $(PROG)
 
diff --git a/src/fsec-print/Makefile b/src/fsec-print/Makefile
index d55167796..a506c1106 100644
--- a/src/fsec-print/Makefile
+++ b/src/fsec-print/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/fsec-print
 PROG = fsec-print
 TARGET = $(PROG)
 
diff --git a/src/fseccomp/Makefile b/src/fseccomp/Makefile
index f8c35d41f..a7d88eb83 100644
--- a/src/fseccomp/Makefile
+++ b/src/fseccomp/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/fseccomp
 PROG = fseccomp
 TARGET = $(PROG)
 
diff --git a/src/ftee/Makefile b/src/ftee/Makefile
index 0c27b4cbc..1b1cdec43 100644
--- a/src/ftee/Makefile
+++ b/src/ftee/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/ftee
 PROG = ftee
 TARGET = $(PROG)
 
diff --git a/src/fzenity/Makefile b/src/fzenity/Makefile
index 148babbe8..cb80ec0bc 100644
--- a/src/fzenity/Makefile
+++ b/src/fzenity/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/fzenity
 PROG = fzenity
 TARGET = $(PROG)
 
diff --git a/src/include/common.h b/src/include/common.h
index 23b00b6f8..4a2b8c1bf 100644
--- a/src/include/common.h
+++ b/src/include/common.h
@@ -41,7 +41,8 @@
 
 #define errExit(msg) do { \
         char msgout[500]; \
-        snprintf(msgout, 500, "Error %s: %s:%d %s", msg, __FILE__, __LINE__, __func__); \
+        snprintf(msgout, 500, "Error %s/%s:%d %s(): %s", \
+                 MOD_DIR, __FILE__, __LINE__, __func__, msg); \
         perror(msgout); \
         exit(1); \
 } while (0)
diff --git a/src/jailcheck/Makefile b/src/jailcheck/Makefile
index 3b0b83412..0b57861c6 100644
--- a/src/jailcheck/Makefile
+++ b/src/jailcheck/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/jailcheck
 PROG = jailcheck
 TARGET = $(PROG)
 
diff --git a/src/lib/Makefile b/src/lib/Makefile
index a7b093048..9cf8abe36 100644
--- a/src/lib/Makefile
+++ b/src/lib/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/lib
 TARGET = lib
 
 include $(ROOT)/src/prog.mk
diff --git a/src/libpostexecseccomp/Makefile b/src/libpostexecseccomp/Makefile
index c5ec14672..c9e25d066 100644
--- a/src/libpostexecseccomp/Makefile
+++ b/src/libpostexecseccomp/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/libpostexecseccomp
 SO = libpostexecseccomp.so
 TARGET = $(SO)
 
diff --git a/src/libtrace/Makefile b/src/libtrace/Makefile
index 8b14a4335..337529361 100644
--- a/src/libtrace/Makefile
+++ b/src/libtrace/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/libtrace
 SO = libtrace.so
 TARGET = $(SO)
 
diff --git a/src/libtracelog/Makefile b/src/libtracelog/Makefile
index 2b43ce131..3e9d9e3e3 100644
--- a/src/libtracelog/Makefile
+++ b/src/libtracelog/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/libtracelog
 SO = libtracelog.so
 TARGET = $(SO)
 
diff --git a/src/profstats/Makefile b/src/profstats/Makefile
index ae88bf2fd..aa947401e 100644
--- a/src/profstats/Makefile
+++ b/src/profstats/Makefile
@@ -2,6 +2,7 @@
 ROOT = ../..
 -include $(ROOT)/config.mk
 
+MOD_DIR = src/profstats
 PROG = profstats
 TARGET = $(PROG)