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Tests for module 'unistr/u32-cmp2'.
[gnulib.git]
/
lib
/
dup2.c
diff --git
a/lib/dup2.c
b/lib/dup2.c
index
6d61829
..
a4422bf
100644
(file)
--- a/
lib/dup2.c
+++ b/
lib/dup2.c
@@
-1,7
+1,6
@@
/* Duplicate an open file descriptor to a specified file descriptor.
/* Duplicate an open file descriptor to a specified file descriptor.
- Copyright (C) 1999, 2004, 2005, 2006, 2007, 2009 Free Software
- Foundation, Inc.
+ Copyright (C) 1999, 2004-2007, 2009-2010 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@
-32,7
+31,7
@@
# include <windows.h>
#endif
# include <windows.h>
#endif
-#if
REPLAC
E_DUP2
+#if
HAV
E_DUP2
# undef dup2
# undef dup2
@@
-53,14
+52,38
@@
rpl_dup2 (int fd, int desired_fd)
}
return fd;
}
}
return fd;
}
+ /* Wine 1.0.1 return 0 when desired_fd is negative but not -1:
+ http://bugs.winehq.org/show_bug.cgi?id=21289 */
+ if (desired_fd < 0)
+ {
+ errno = EBADF;
+ return -1;
+ }
# endif
result = dup2 (fd, desired_fd);
# endif
result = dup2 (fd, desired_fd);
+# ifdef __linux__
+ /* Correct a Linux return value.
+ <http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.30.y.git;a=commitdiff;h=2b79bc4f7ebbd5af3c8b867968f9f15602d5f802>
+ */
+ if (fd == desired_fd && result == (unsigned int) -EBADF)
+ {
+ errno = EBADF;
+ result = -1;
+ }
+# endif
if (result == 0)
result = desired_fd;
if (result == 0)
result = desired_fd;
+ /* Correct a cygwin 1.5.x errno value. */
+ else if (result == -1 && errno == EMFILE)
+ errno = EBADF;
+# if REPLACE_FCHDIR
+ if (fd != desired_fd && result != -1)
+ result = _gl_register_dup (fd, result);
+# endif
return result;
}
return result;
}
-#else /* !
REPLAC
E_DUP2 */
+#else /* !
HAV
E_DUP2 */
/* On older platforms, dup2 did not exist. */
/* On older platforms, dup2 did not exist. */
@@
-85,13
+108,21
@@
dupfd (int fd, int desired_fd)
int
dup2 (int fd, int desired_fd)
{
int
dup2 (int fd, int desired_fd)
{
- if (fd == desired_fd)
- return fd;
+ int result = fcntl (fd, F_GETFL) < 0 ? -1 : fd;
+ if (result == -1 || fd == desired_fd)
+ return result;
close (desired_fd);
# ifdef F_DUPFD
close (desired_fd);
# ifdef F_DUPFD
- return fcntl (fd, F_DUPFD, desired_fd);
+ result = fcntl (fd, F_DUPFD, desired_fd);
+# if REPLACE_FCHDIR
+ if (0 <= result)
+ result = _gl_register_dup (fd, result);
+# endif
# else
# else
- re
turn
dupfd (fd, desired_fd);
+ re
sult =
dupfd (fd, desired_fd);
# endif
# endif
+ if (result == -1 && (errno == EMFILE || errno == EINVAL))
+ errno = EBADF;
+ return result;
}
}
-#endif /* !
REPLAC
E_DUP2 */
+#endif /* !
HAV
E_DUP2 */