72 lines
2.3 KiB
Diff
72 lines
2.3 KiB
Diff
commit 04b1eb161fdc8b88876bf78b34d2bb92584aba45
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Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
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Date: Fri Nov 8 12:33:47 2024 -0500
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support: Add xdup
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Add xdup as the error-checking version of dup for test cases.
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Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
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Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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diff --git a/support/Makefile b/support/Makefile
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index ef90b96bf5f6db5d..d6d03c2ed3af3e6d 100644
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--- a/support/Makefile
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+++ b/support/Makefile
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@@ -128,6 +128,7 @@ libsupport-routines = \
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xcopy_file_range \
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xdlfcn \
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xdlmopen \
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+ xdup \
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xdup2 \
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xfchmod \
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xfclose \
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diff --git a/support/xdup.c b/support/xdup.c
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new file mode 100644
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index 0000000000000000..1eab317354f1f353
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--- /dev/null
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+++ b/support/xdup.c
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@@ -0,0 +1,30 @@
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+/* dup with error checking.
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+ Copyright The GNU Toolchain Authors.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library 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 GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <https://www.gnu.org/licenses/>. */
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+
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+#include <support/xunistd.h>
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+#include <support/check.h>
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+
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+int
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+xdup (int from)
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+{
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+ int ret = dup (from);
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+ if (ret < 0)
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+ FAIL_EXIT1 ("dup (%d): %m", from);
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+
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+ return ret;
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+}
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diff --git a/support/xunistd.h b/support/xunistd.h
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index 94b1e1eb1b1e8253..a4d0d3427204cfe5 100644
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--- a/support/xunistd.h
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+++ b/support/xunistd.h
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@@ -35,6 +35,7 @@ pid_t xfork (void);
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pid_t xwaitpid (pid_t, int *status, int flags);
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void xpipe (int[2]);
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void xdup2 (int, int);
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+int xdup (int);
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int xopen (const char *path, int flags, mode_t);
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void support_check_stat_fd (const char *name, int fd, int result);
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void support_check_stat_path (const char *name, const char *path, int result);
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