4 files changed, 92 insertions, 1 deletions
diff --git a/libc/stdio/Makefile b/libc/stdio/Makefile
index fbd0bbf15..874dcae7f 100644
--- a/libc/stdio/Makefile
+++ b/libc/stdio/Makefile
@@ -36,7 +36,7 @@ MOBJ2=printf.o sprintf.o fprintf.o vprintf.o vsprintf.o vfprintf.o snprintf.o vs
 MSRC3=scanf.c
 MOBJ3=scanf.o sscanf.o fscanf.o vscanf.o vsscanf.o vfscanf.o
 
-CSRC=dputs.c
+CSRC=dputs.c popen.c perror.c remove.c
 COBJS=$(patsubst %.c,%.o, $(CSRC))
 OBJS=$(MOBJ) $(MOBJ2) $(MOBJ3) $(COBJS)
 
diff --git a/libc/stdio/perror.c b/libc/stdio/perror.c
new file mode 100644
index 000000000..d6274c056
--- /dev/null
+++ b/libc/stdio/perror.c
@@ -0,0 +1,19 @@
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+
+void perror(str)
+__const char *str;
+{
+	register char *ptr;
+
+	if (str) {
+		write(2, str, strlen(str));
+		write(2, ": ", 2);
+	} else
+		write(2, "perror: ", 8);
+
+	ptr = strerror(errno);
+	write(2, ptr, strlen(ptr));
+	write(2, "\n", 1);
+}
diff --git a/libc/stdio/popen.c b/libc/stdio/popen.c
new file mode 100644
index 000000000..a07c411eb
--- /dev/null
+++ b/libc/stdio/popen.c
@@ -0,0 +1,49 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+
+FILE *popen(command, rw)
+char *command;
+char *rw;
+{
+	int pipe_fd[2];
+	int pid, reading;
+
+	if (pipe(pipe_fd) < 0)
+		return NULL;
+	reading = (rw[0] == 'r');
+
+	pid = vfork();
+	if (pid < 0) {
+		close(pipe_fd[0]);
+		close(pipe_fd[1]);
+		return NULL;
+	}
+	if (pid == 0) {
+		close(pipe_fd[!reading]);
+		close(reading);
+		if (pipe_fd[reading] != reading) {
+			dup2(pipe_fd[reading], reading);
+			close(pipe_fd[reading]);
+		}
+
+		execl("/bin/sh", "sh", "-c", command, (char *) 0);
+		_exit(255);
+	}
+
+	close(pipe_fd[reading]);
+	return fdopen(pipe_fd[!reading], rw);
+}
+
+int pclose(fd)
+FILE *fd;
+{
+	int waitstat;
+
+	if (fclose(fd) != 0)
+		return EOF;
+	wait(&waitstat);
+	return waitstat;
+}
diff --git a/libc/stdio/remove.c b/libc/stdio/remove.c
new file mode 100644
index 000000000..115b871bb
--- /dev/null
+++ b/libc/stdio/remove.c
@@ -0,0 +1,23 @@
+/* Copyright (C) 1995,1996 Robert de Bath <rdebath@cix.compulink.co.uk>
+ * This file is part of the Linux-8086 C library and is distributed
+ * under the GNU Library General Public License.
+ */
+#include <unistd.h>
+#include <string.h>
+#include <sys/types.h>
+#include <errno.h>
+
+int remove(src)
+__const char *src;
+{
+	extern int errno;
+	int er = errno;
+	int rv = unlink(src);
+
+	if (rv < 0 && errno == EISDIR)
+		rv = rmdir(src);
+	if (rv >= 0)
+		errno = er;
+	return rv;
+}
+