Added man, Makefile can install

FossilOrigin-Name: 345456287af27b824c56e03b1eeebd9f73fe6562

5 files changed, 152 insertions, 58 deletions

diff --git a/src/c_args.c b/src/c_args.c
new file mode 100644
index 0000000..616b979
--- /dev/null
+++ b/src/c_args.c
@@ -0,0 +1,80 @@
+/*
+ * ========================
+ * =====    ===============
+ * ======  ================
+ * ======  ================
+ * ======  ====   ====   ==
+ * ======  ===     ==  =  =
+ * ======  ===  =  ==     =
+ * =  ===  ===  =  ==  ====
+ * =  ===  ===  =  ==  =  =
+ * ==     =====   ====   ==
+ * ========================
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 2020 Joe
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the organization nor the
+ *    names of its contributors may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JOE ''AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JOE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * bsdsetsid: src/c_args.c
+ * Sun Nov 29 16:43:56 CET 2020
+ * Joe
+ *
+ * Arguments handling here.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "c_args.h"
+#include "c_bsdsetsid.h"
+
+void
+c_args
+(int			argc,
+ const char*	argv[],
+ bool_t*		wopt)
+{
+	if (argc == 1) {
+		dprintf(STDERR_FILENO, "%s\n", C_USAGE_FMT);
+		exit(EXIT_FAILURE);
+	}
+	if (strncmp(argv[1], C_W_OPT, 3) == 0) {
+		*wopt = TRUE;
+		if (argc == 2) {
+			dprintf(STDERR_FILENO, "%s\n", C_USAGE_FMT);
+			exit(EXIT_FAILURE);
+		}
+	}
+	if (strncmp(argv[1], C_H_OPT, 3) == 0) {
+		*wopt = TRUE;
+		if (argc == 2) {
+			dprintf(STDERR_FILENO, "%s\n", C_HELP_FMT);
+			exit(EXIT_SUCCESS);
+		}
+	}
+}
diff --git a/src/c_args.h b/src/c_args.h
new file mode 100644
index 0000000..4c90c00
--- /dev/null
+++ b/src/c_args.h
@@ -0,0 +1,61 @@
+/*
+ * ========================
+ * =====    ===============
+ * ======  ================
+ * ======  ================
+ * ======  ====   ====   ==
+ * ======  ===     ==  =  =
+ * ======  ===  =  ==     =
+ * =  ===  ===  =  ==  ====
+ * =  ===  ===  =  ==  =  =
+ * ==     =====   ====   ==
+ * ========================
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 2020 Joe
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the organization nor the
+ *    names of its contributors may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JOE ''AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JOE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * bsdsetsid: src/c_args.h
+ * Sun Nov 29 17:02:19 CET 2020
+ * Joe
+ */
+
+#ifndef __C_ARGS_H__
+#define __C_ARGS_H__
+
+#include "c_bsdsetsid.h"
+
+#define C_USAGE_FMT "usage: bsdsetsid [-hw] utility [arguments]"
+#define C_HELP_FMT \
+	"usage: bsdsetsid [-hw] utility [arguments]\n\n"\
+	"options: -h\tdisplay this help\n"\
+	"         -w\twait program to exit, and use the same return"
+#define C_H_OPT "-h"
+#define C_W_OPT "-w"
+
+void	c_args(int, const char*[], bool_t*);
+
+#endif /* ifndef __C_ARGS_H__ */
diff --git a/src/c_bsdsetsid.c b/src/c_bsdsetsid.c
index 7d3a76d..f8e2067 100644
--- a/src/c_bsdsetsid.c
+++ b/src/c_bsdsetsid.c
@@ -39,7 +39,7 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * bsdsetsid: src/c_bsdsetsid.c
- * Thu Nov 26 22:12:37 CET 2020
+ * Sun Nov 29 16:42:26 CET 2020
  * Joe
  *
  * This is the entrypoint of the program.
@@ -51,39 +51,10 @@
 #include <string.h>
 #include <unistd.h>
 
+#include "c_args.h"
 #include "c_bsdsetsid.h"
 #include "c_fork.h"
 
-static char
-c_args
-(int			argc,
- const char*	argv[],
- bool_t*		wopt)
-{
-	if (argc == 1) {
-		dprintf(
-			STDERR_FILENO,
-			"%s: %s\n",
-			C_PROGNAME,
-			C_ERR_NOARG
-			);
-		return (1);
-	}
-	if (strncmp(argv[1], C_W_OPT, 3) == 0) {
-		*wopt = TRUE;
-		if (argc == 2) {
-			dprintf(
-				STDERR_FILENO,
-				"%s: %s\n",
-				C_PROGNAME,
-				C_ERR_NOARG
-				);
-			return (1);
-		}
-	}
-	return (0);
-}
-
 int
 main
 (int			argc,
@@ -93,9 +64,7 @@ main
 	bool_t wopt;
 
 	wopt = FALSE;
-	if (c_args(argc, argv, &wopt) != 0) {
-		return (EXIT_FAILURE);
-	}
+	c_args(argc, argv, &wopt);
 	c_fork(argv, envp, wopt);
 	return (EXIT_SUCCESS);
 }
diff --git a/src/c_bsdsetsid.h b/src/c_bsdsetsid.h
index d7f7724..740bd7d 100644
--- a/src/c_bsdsetsid.h
+++ b/src/c_bsdsetsid.h
@@ -39,7 +39,7 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * bsdsetsid: src/c_bsdsetsid.h
- * Fri Nov 27 01:48:28 CET 2020
+ * Sun Nov 29 17:02:13 CET 2020
  * Joe
  *
  * This is the entrypoint of the program.
@@ -47,6 +47,8 @@
 #ifndef __C_BSDSETSID_H__
 #define __C_BSDSETSID_H__
 
+#define C_PROGNAME "bsdsetsid"
+
 typedef char bool_t;
 typedef void* ptr_t;
 
@@ -55,8 +57,4 @@ enum bool_e {
 	TRUE
 };
 
-#define C_PROGNAME "bsdsetsid"
-#define C_ERR_NOARG "no program specified"
-#define C_W_OPT "-w"
-
-#endif
+#endif /* ifndef __C_BSDSETSID_H__ */
diff --git a/src/c_fork.c b/src/c_fork.c
index ee754ba..61a3016 100644
--- a/src/c_fork.c
+++ b/src/c_fork.c
@@ -39,7 +39,7 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * bsdsetsid: src/c_fork.c
- * Fri Nov 27 01:48:00 CET 2020
+ * Sun Nov 29 15:26:58 CET 2020
  * Joe
  *
  * The program's main fork(2).
@@ -121,22 +121,13 @@ c_fork_child
 
 	u.pid = setsid();
 	if (u.pid == -1) {
-		dprintf(
-			STDERR_FILENO,
-			"%s: setsid: %s\n",
-			C_PROGNAME,
-			strerror(errno)
-			);
+		dprintf(STDERR_FILENO, "%s: setsid: %s\n", C_PROGNAME, strerror(errno));
 		exit(EXIT_FAILURE);
 	}
 	path = mem;
 	u.ret = c_get_path(argv[1 + wopt], envp, path);
 	if (u.ret == 1) {
-		dprintf(
-			STDERR_FILENO,
-			"%s: PATH not set\n",
-			C_PROGNAME
-			);
+		dprintf(STDERR_FILENO, "%s: PATH not set\n", C_PROGNAME);
 		exit(EXIT_FAILURE);
 	}
 	else if (u.ret == 2) {
@@ -191,12 +182,7 @@ c_fork_parent
 static void
 c_fork_error(void)
 {
-	dprintf(
-		STDERR_FILENO,
-		"%s: fork: %s\n",
-		C_PROGNAME,
-		strerror(errno)
-		);
+	dprintf(STDERR_FILENO, "%s: fork: %s\n", C_PROGNAME, strerror(errno));
 	exit(EXIT_FAILURE);
 }