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https://github.com/varun-r-mallya/sysprof.git
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93 lines
2.5 KiB
C
93 lines
2.5 KiB
C
/* sysprof-cat.c
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*
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* Copyright 2018-2019 Christian Hergert <chergert@redhat.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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#define G_LOG_DOMAIN "sysprof-cat"
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#include "config.h"
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#include <glib/gstdio.h>
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#include <stdlib.h>
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#include <sysprof-capture.h>
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#include <unistd.h>
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gint
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main (gint argc,
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gchar *argv[])
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{
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g_autoptr(SysprofCaptureWriter) writer = NULL;
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g_autofree gchar *contents = NULL;
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g_autofree gchar *tmpname = NULL;
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gsize len;
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gint fd;
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if (argc == 1)
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return 0;
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if (isatty (STDOUT_FILENO))
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{
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g_printerr ("stdout is a TTY, refusing to write binary data to stdout.\n");
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return EXIT_FAILURE;
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}
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for (guint i = 1; i < argc; i++)
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{
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if (!g_file_test (argv[i], G_FILE_TEST_IS_REGULAR))
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{
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g_printerr ("\"%s\" is not a regular file.\n", argv[i]);
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return EXIT_FAILURE;
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}
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}
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if (-1 == (fd = g_file_open_tmp (".sysprof-cat-XXXXXX", &tmpname, NULL)))
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{
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g_printerr ("Failed to create memfd for capture file.\n");
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return EXIT_FAILURE;
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}
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writer = sysprof_capture_writer_new_from_fd (fd, 4096*4);
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for (guint i = 1; i < argc; i++)
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{
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g_autoptr(SysprofCaptureReader) reader = NULL;
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g_autoptr(GError) error = NULL;
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if (!(reader = sysprof_capture_reader_new (argv[i], &error)))
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{
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g_printerr ("Failed to create reader for \"%s\": %s\n",
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argv[i], error->message);
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return EXIT_FAILURE;
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}
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if (!sysprof_capture_writer_cat (writer, reader, &error))
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{
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g_printerr ("Failed to join \"%s\": %s\n",
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argv[i], error->message);
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return EXIT_FAILURE;
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}
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}
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if (g_file_get_contents (tmpname, &contents, &len, NULL))
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write (STDOUT_FILENO, contents, len);
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g_unlink (tmpname);
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return EXIT_SUCCESS;
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}
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