Imported Upstream version 1.23

[tar] / src / system.c

diff --git a/src/system.c b/src/system.c
index c90a40d1217b0441571604ead5f9af839675793c..d646822c4a6ccc65ae0ad098b1b1f47956db6dd4 100644 (file)
--- a/src/system.c
+++ b/src/system.c
@@ -174,11 +174,11 @@ sys_wait_for_child (pid_t child_pid, bool eof)
        {
          int sig = WTERMSIG (wait_status);
          if (!(!eof && sig == SIGPIPE))
-           ERROR ((0, 0, _("Child died with signal %d"), sig));
+           FATAL_ERROR ((0, 0, _("Child died with signal %d"), sig));
        }
       else if (WEXITSTATUS (wait_status) != 0)
-       ERROR ((0, 0, _("Child returned status %d"),
-               WEXITSTATUS (wait_status)));
+       FATAL_ERROR ((0, 0, _("Child returned status %d"),
+                     WEXITSTATUS (wait_status)));
     }
 }
 
@@ -283,6 +283,30 @@ xdup2 (int from, int into)
     }
 }
 
+void wait_for_grandchild (pid_t pid) __attribute__ ((__noreturn__));
+
+/* Propagate any failure of the grandchild back to the parent.  */
+void
+wait_for_grandchild (pid_t pid)
+{
+  int wait_status;
+  int exit_code = 0;
+  
+  while (waitpid (pid, &wait_status, 0) == -1)
+    if (errno != EINTR)
+      {
+       waitpid_error (use_compress_program_option);
+       break;
+      }
+
+  if (WIFSIGNALED (wait_status))
+    raise (WTERMSIG (wait_status));
+  else if (WEXITSTATUS (wait_status) != 0)
+    exit_code = WEXITSTATUS (wait_status);
+  
+  exit (exit_code);
+}
+
 /* Set ARCHIVE for writing, then compressing an archive.  */
 pid_t
 sys_child_open_for_compress (void)
@@ -291,7 +315,6 @@ sys_child_open_for_compress (void)
   int child_pipe[2];
   pid_t grandchild_pid;
   pid_t child_pid;
-  int wait_status;
 
   xpipe (parent_pipe);
   child_pid = xfork ();
@@ -307,8 +330,9 @@ sys_child_open_for_compress (void)
 
   /* The new born child tar is here!  */
 
-  program_name = _("tar (child)");
-
+  set_program_name (_("tar (child)"));
+  signal (SIGPIPE, SIG_DFL);
+  
   xdup2 (parent_pipe[PREAD], STDIN_FILENO);
   xclose (parent_pipe[PWRITE]);
 
@@ -351,7 +375,7 @@ sys_child_open_for_compress (void)
     {
       /* The newborn grandchild tar is here!  Launch the compressor.  */
 
-      program_name = _("tar (grandchild)");
+      set_program_name (_("tar (grandchild)"));
 
       xdup2 (child_pipe[PWRITE], STDOUT_FILENO);
       xclose (child_pipe[PREAD]);
@@ -424,24 +448,7 @@ sys_child_open_for_compress (void)
        archive_write_error (status);
     }
 
-  /* Propagate any failure of the grandchild back to the parent.  */
-
-  while (waitpid (grandchild_pid, &wait_status, 0) == -1)
-    if (errno != EINTR)
-      {
-       waitpid_error (use_compress_program_option);
-       break;
-      }
-
-  if (WIFSIGNALED (wait_status))
-    {
-      kill (child_pid, WTERMSIG (wait_status));
-      exit_status = TAREXIT_FAILURE;
-    }
-  else if (WEXITSTATUS (wait_status) != 0)
-    exit_status = WEXITSTATUS (wait_status);
-
-  exit (exit_status);
+  wait_for_grandchild (grandchild_pid);
 }
 
 /* Set ARCHIVE for uncompressing, then reading an archive.  */
@@ -452,7 +459,6 @@ sys_child_open_for_uncompress (void)
   int child_pipe[2];
   pid_t grandchild_pid;
   pid_t child_pid;
-  int wait_status;
 
   xpipe (parent_pipe);
   child_pid = xfork ();
@@ -468,8 +474,9 @@ sys_child_open_for_uncompress (void)
 
   /* The newborn child tar is here!  */
 
-  program_name = _("tar (child)");
-
+  set_program_name (_("tar (child)"));
+  signal (SIGPIPE, SIG_DFL);
+  
   xdup2 (parent_pipe[PWRITE], STDOUT_FILENO);
   xclose (parent_pipe[PREAD]);
 
@@ -503,7 +510,7 @@ sys_child_open_for_uncompress (void)
     {
       /* The newborn grandchild tar is here!  Launch the uncompressor.  */
 
-      program_name = _("tar (grandchild)");
+      set_program_name (_("tar (grandchild)"));
 
       xdup2 (child_pipe[PREAD], STDIN_FILENO);
       xclose (child_pipe[PWRITE]);
@@ -562,24 +569,7 @@ sys_child_open_for_uncompress (void)
 
   xclose (STDOUT_FILENO);
 
-  /* Propagate any failure of the grandchild back to the parent.  */
-
-  while (waitpid (grandchild_pid, &wait_status, 0) == -1)
-    if (errno != EINTR)
-      {
-       waitpid_error (use_compress_program_option);
-       break;
-      }
-
-  if (WIFSIGNALED (wait_status))
-    {
-      kill (child_pid, WTERMSIG (wait_status));
-      exit_status = TAREXIT_FAILURE;
-    }
-  else if (WEXITSTATUS (wait_status) != 0)
-    exit_status = WEXITSTATUS (wait_status);
-
-  exit (exit_status);
+  wait_for_grandchild (grandchild_pid);
 }
 
 \f
@@ -639,6 +629,12 @@ static void
 stat_to_env (char *name, char type, struct tar_stat_info *st)
 {
   str_to_env ("TAR_VERSION", PACKAGE_VERSION);
+  str_to_env ("TAR_ARCHIVE", *archive_name_cursor);
+  dec_to_env ("TAR_VOLUME", archive_name_cursor - archive_name_array + 1);
+  dec_to_env ("TAR_BLOCKING_FACTOR", blocking_factor);
+  str_to_env ("TAR_FORMAT",
+             archive_format_string (current_format == DEFAULT_FORMAT ?
+                                    archive_format : current_format));
   chr_to_env ("TAR_FILETYPE", type);
   oct_to_env ("TAR_MODE", st->stat.st_mode);
   str_to_env ("TAR_FILENAME", name);