fiss-minit

commit 289a3d93e511931b16db534ceab1d32653b9dddd
parent 7d2394b33fd0442019c1d005cc01d737770bdf7c
Author: sanjiyan <sanjiyan>
Date:   Fri, 22 Mar 2002 21:21:52 +0000

add write_proc
"make install" now installs hard-reboot and write_proc in /sbin

Diffstat:
M
CHANGES
 | 
1
+
M
Makefile
 | 
6
+++++-
A
write_proc.c
 | 
17
+++++++++++++++++

3 files changed, 23 insertions(+), 1 deletion(-)
diff --git a/CHANGES b/CHANGES
@@ -4,6 +4,7 @@
   add hard-reboot from Tommi Virtanen.  He also asked me to include an
     explicit license statement and sent a patch to make debian packaging
     easier (deb files can't include FIFOs).
+  Olaf: add write_proc.
 
 0.8:
   call waitpid repeatedly until it returns "no children".
diff --git a/Makefile b/Makefile
@@ -1,4 +1,4 @@
-all: minit msvc pidfilehack hard-reboot
+all: minit msvc pidfilehack hard-reboot write_proc
 
 #CFLAGS=-pipe -march=i386 -fomit-frame-pointer -Os -I../dietlibc/include
 DIET=diet
@@ -31,8 +31,12 @@ pidfilehack: pidfilehack.c
 hard-reboot: hard-reboot.c
 	$(DIET) $(CROSS)$(CC) $(CFLAGS) -o $@ $^
 
+write_proc: write_proc.c
+	$(DIET) $(CROSS)$(CC) $(CFLAGS) -o $@ $^
+
 install-files:
 	install minit pidfilehack $(DESTDIR)/sbin
+	install write_proc hard-reboot $(DESTDIR)/sbin
 	install msvc $(DESTDIR)/bin
 	test -d $(DESTDIR)/etc/minit || mkdir $(DESTDIR)/etc/minit
 
diff --git a/write_proc.c b/write_proc.c
@@ -0,0 +1,17 @@
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+
+#define USAGE "write_proc <value> <path_to_proc_file>\n"
+
+int main(int argc,char*argv[]) {
+  int fd;
+  if (argc!=3) goto usage;
+  if ((fd=open(argv[2],O_WRONLY))==-1) goto usage;
+  write(fd,argv[1],strlen(argv[1]));
+  close(fd);
+  return 0;
+usage:
+  write(2,USAGE,strlen(USAGE));
+  return 1;
+}