X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=daemon%2Ffile.c;h=0b8b463ce5380d9f802657ad2a84f0c95e04d4ea;hb=f1a10c6285cca30f8c9491ae08951137457bb018;hp=537618f2f3ef80eea81f3960fe5348b0f16d0c0a;hpb=1cf85b1e60e85c4940869c6291d75ac44a5bd190;p=libguestfs.git

diff --git a/daemon/file.c b/daemon/file.c
index 537618f..0b8b463 100644
--- a/daemon/file.c
+++ b/daemon/file.c
@@ -18,7 +18,7 @@
 
 #include <config.h>
 
-#define _GNU_SOURCE		/* for futimens(2) */
+#define _GNU_SOURCE		/* for futimens(2) and getline(3) */
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -128,3 +128,189 @@ do_cat (const char *path)
 
   return buf;			/* caller will free */
 }
+
+char **
+do_read_lines (const char *path)
+{
+  char **r = NULL;
+  int size = 0, alloc = 0;
+  FILE *fp;
+  char *line = NULL;
+  size_t len = 0;
+  ssize_t n;
+
+  NEED_ROOT (NULL);
+  ABS_PATH (path, NULL);
+
+  CHROOT_IN;
+  fp = fopen (path, "r");
+  CHROOT_OUT;
+
+  if (!fp) {
+    reply_with_perror ("fopen: %s", path);
+    return NULL;
+  }
+
+  while ((n = getline (&line, &len, fp)) != -1) {
+    /* Remove either LF or CRLF. */
+    if (n >= 2 && line[n-2] == '\r' && line[n-1] == '\n')
+      line[n-2] = '\0';
+    else if (n >= 1 && line[n-1] == '\n')
+      line[n-1] = '\0';
+
+    if (add_string (&r, &size, &alloc, line) == -1) {
+      free (line);
+      fclose (fp);
+      return NULL;
+    }
+  }
+
+  free (line);
+
+  if (add_string (&r, &size, &alloc, NULL) == -1) {
+    fclose (fp);
+    return NULL;
+  }
+
+  if (fclose (fp) == EOF) {
+    reply_with_perror ("fclose: %s", path);
+    free_strings (r);
+    return NULL;
+  }
+
+  return r;
+}
+
+int
+do_rm (const char *path)
+{
+  int r;
+
+  NEED_ROOT (-1);
+  ABS_PATH (path, -1);
+
+  CHROOT_IN;
+  r = unlink (path);
+  CHROOT_OUT;
+
+  if (r == -1) {
+    reply_with_perror ("unlink: %s", path);
+    return -1;
+  }
+
+  return 0;
+}
+
+int
+do_chmod (int mode, const char *path)
+{
+  int r;
+
+  NEED_ROOT (-1);
+  ABS_PATH (path, -1);
+
+  CHROOT_IN;
+  r = chmod (path, mode);
+  CHROOT_OUT;
+
+  if (r == -1) {
+    reply_with_perror ("chmod: %s: 0%o", path, mode);
+    return -1;
+  }
+
+  return 0;
+}
+
+int
+do_chown (int owner, int group, const char *path)
+{
+  int r;
+
+  NEED_ROOT (-1);
+  ABS_PATH (path, -1);
+
+  CHROOT_IN;
+  r = chown (path, owner, group);
+  CHROOT_OUT;
+
+  if (r == -1) {
+    reply_with_perror ("chown: %s: %d.%d", path, owner, group);
+    return -1;
+  }
+
+  return 0;
+}
+
+int
+do_exists (const char *path)
+{
+  int r;
+
+  NEED_ROOT (-1);
+  ABS_PATH (path, -1);
+
+  CHROOT_IN;
+  r = access (path, F_OK);
+  CHROOT_OUT;
+
+  return r == 0;
+}
+
+int
+do_is_file (const char *path)
+{
+  int r;
+  struct stat buf;
+
+  NEED_ROOT (-1);
+  ABS_PATH (path, -1);
+
+  CHROOT_IN;
+  r = lstat (path, &buf);
+  CHROOT_OUT;
+
+  if (r == -1) {
+    if (errno != ENOENT && errno != ENOTDIR) {
+      reply_with_perror ("stat: %s", path);
+      return -1;
+    }
+    else
+      return 0;			/* Not a file. */
+  }
+
+  return S_ISREG (buf.st_mode);
+}
+
+int
+do_write_file (const char *path, const char *content, int size)
+{
+  int fd;
+
+  NEED_ROOT (-1);
+  ABS_PATH (path, -1);
+
+  if (size == 0)
+    size = strlen (content);
+
+  CHROOT_IN;
+  fd = open (path, O_WRONLY | O_CREAT | O_NOCTTY | O_NONBLOCK, 0666);
+  CHROOT_OUT;
+
+  if (fd == -1) {
+    reply_with_perror ("open: %s", path);
+    return -1;
+  }
+
+  if (xwrite (fd, content, size) == -1) {
+    reply_with_perror ("write");
+    close (fd);
+    return -1;
+  }
+
+  if (close (fd) == -1) {
+    reply_with_perror ("close: %s", path);
+    return -1;
+  }
+
+  return 0;
+}