From f805aa763fad3156428866a02de95ba9b67079a7 Mon Sep 17 00:00:00 2001
From: Alejandro Colomar <alx.manpages@gmail.com>
Date: Wed, 17 Aug 2022 10:11:15 +0200
Subject: grepc, grepc.1: -tg, -tgp, -tgd: Add more support for glibc internal
 names of libc functions

Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
---
 bin/grepc              | 52 ++++++++++++++++++++++++++++++++++++++++++++++++--
 share/man/man1/grepc.1 | 12 ++++++++++++
 2 files changed, 62 insertions(+), 2 deletions(-)

diff --git a/bin/grepc b/bin/grepc
index e42b158..df15953 100755
--- a/bin/grepc
+++ b/bin/grepc
@@ -16,6 +16,9 @@ t_func_def='no';
 t_func_syscall='no';
 t_func_syscall_proto='no';
 t_func_syscall_def='no';
+t_func_glibc='no';
+t_func_glibc_proto='no';
+t_func_glibc_def='no';
 t_macro='no';
 t_type='no';
 t_use='no';
@@ -78,6 +81,15 @@ grepc_parse_cmd()
 			fsd)
 				t_func_syscall_def='yes';
 				;;
+			fg)
+				t_func_glibc='yes';
+				;;
+			fgp)
+				t_func_glibc_proto='yes';
+				;;
+			fgd)
+				t_func_glibc_def='yes';
+				;;
 			m)
 				t_macro='yes';
 				;;
@@ -207,15 +219,41 @@ grepc_func_def()
 }
 
 
-grepc_glibc_func_math()
+grepc_glibc_func_libm_def()
 {
 	grepc_func_def "M_DECL_FUNC \(__$1\)";
 }
 
 
+grepc_glibc_func_libio_proto()
+{
+	grepc_func_proto "_IO_$1";
+}
+
+
+grepc_glibc_func_libio_def()
+{
+	grepc_func_def "_IO_$1";
+}
+
+
+grepc_glibc_func_proto()
+{
+	grepc_glibc_func_libio_proto "$1";
+}
+
+
+grepc_glibc_func_def()
+{
+	grepc_glibc_func_libm_def "$1";
+	grepc_glibc_func_libio_def "$1";
+}
+
+
 grepc_glibc_func()
 {
-	grepc_glibc_func_math "$1";
+	grepc_glibc_func_proto "$1";
+	grepc_glibc_func_def "$1";
 }
 
 
@@ -458,6 +496,16 @@ grepc_search()
 					grepc_linux_func_syscall_def "$1";
 				fi;
 			fi;
+			if [ "$t_func_glibc" = 'yes' ]; then
+				grepc_glibc_func "$1";
+			else
+				if [ "$t_func_glibc_proto" = 'yes' ]; then
+					grepc_glibc_func_proto "$1";
+				fi;
+				if [ "$t_func_glibc_def" = 'yes' ]; then
+					grepc_glibc_func_def "$1";
+				fi;
+			fi;
 		fi;
 		if [ "$t_macro" = 'yes' ]; then
 			grepc_macro "$1";
diff --git a/share/man/man1/grepc.1 b/share/man/man1/grepc.1
index aa69c7b..2f7e3b1 100644
--- a/share/man/man1/grepc.1
+++ b/share/man/man1/grepc.1
@@ -64,6 +64,18 @@ Linux kernel system call prototypes.
 .B fsd
 Linux kernel system call definitions.
 .RE
+.TP
+.B fg
+Glibc internal names of libc functions.
+This can be further subdivided into:
+.RS
+.TP
+.B fgp
+Glibc prototypes.
+.TP
+.B fgd
+Glibc definitions.
+.RE
 .RE
 .TP
 .B m
-- 
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