about summary refs log tree commit diff
path: root/support/capture_subprocess.h
diff options
context:
space:
mode:
authorFlorian Weimer <fweimer@redhat.com>2017-06-02 11:59:28 +0200
committerFlorian Weimer <fweimer@redhat.com>2017-06-02 11:59:28 +0200
commit91b6eb1140eda6bab324821ee3785e5d0ca155b8 (patch)
treec8b630c412611a9b9f5e600e8824661f403bfa7f /support/capture_subprocess.h
parent09103e40252454e906a0b8543a142fc96b4c17c1 (diff)
downloadglibc-91b6eb1140eda6bab324821ee3785e5d0ca155b8.tar.gz
glibc-91b6eb1140eda6bab324821ee3785e5d0ca155b8.tar.xz
glibc-91b6eb1140eda6bab324821ee3785e5d0ca155b8.zip
Add internal facility for dynamic array handling
This is intended as a type-safe alternative to obstacks and
hand-written realloc constructs.  The implementation avoids
writing function pointers to the heap.
Diffstat (limited to 'support/capture_subprocess.h')
-rw-r--r--support/capture_subprocess.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/support/capture_subprocess.h b/support/capture_subprocess.h
new file mode 100644
index 0000000000..be5d34fbe2
--- /dev/null
+++ b/support/capture_subprocess.h
@@ -0,0 +1,42 @@
+/* Capture output from a subprocess.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef SUPPORT_CAPTURE_SUBPROCESS_H
+#define SUPPORT_CAPTURE_SUBPROCESS_H
+
+#include <support/xmemstream.h>
+
+struct support_capture_subprocess
+{
+  struct xmemstream out;
+  struct xmemstream err;
+  int status;
+};
+
+/* Invoke CALLBACK (CLOSURE) in a subprocess and capture standard
+   output, standard error, and the exit status.  The out.buffer and
+   err.buffer members in the result are null-terminated strings which
+   can be examined by the caller (out.out and err.out are NULL).  */
+struct support_capture_subprocess support_capture_subprocess
+  (void (*callback) (void *), void *closure);
+
+/* Deallocate the subprocess data captured by
+   support_capture_subprocess.  */
+void support_capture_subprocess_free (struct support_capture_subprocess *);
+
+#endif /* SUPPORT_CAPTURE_SUBPROCESS_H */