#include <stdlib.h>
#include <string.h>
#include <unistd.h>
+#include <fcntl.h>
-#include "../src/guestfs_protocol.h"
+#include "guestfs_protocol.h"
#include "daemon.h"
#include "actions.h"
static char **
-headtail (const char *prog, const char *flag, const char *n, char *path)
+headtail (const char *prog, const char *flag, const char *n, const char *path)
{
- char *buf;
char *out, *err;
- int r;
+ int fd, flags, r;
char **lines;
- NEED_ROOT (return NULL);
- ABS_PATH (path, return NULL);
+ CHROOT_IN;
+ fd = open (path, O_RDONLY);
+ CHROOT_OUT;
- /* Make the path relative to /sysroot. */
- buf = sysroot_path (path);
- if (!buf) {
- reply_with_perror ("malloc");
+ if (fd == -1) {
+ reply_with_perror ("%s", path);
return NULL;
}
- r = command (&out, &err, prog, flag, n, buf, NULL);
- free (buf);
+ flags = COMMAND_FLAG_CHROOT_COPY_FILE_TO_STDIN | fd;
+ r = commandf (&out, &err, flags, prog, flag, n, NULL);
if (r == -1) {
reply_with_error ("%s %s %s: %s", prog, flag, n, err);
free (out);
}
char **
-do_head (char *path)
+do_head (const char *path)
{
return headtail ("head", "-n", "10", path);
}
char **
-do_tail (char *path)
+do_tail (const char *path)
{
return headtail ("tail", "-n", "10", path);
}
char **
-do_head_n (int n, char *path)
+do_head_n (int n, const char *path)
{
char nbuf[16];
}
char **
-do_tail_n (int n, char *path)
+do_tail_n (int n, const char *path)
{
char nbuf[16];