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author | Richard Maw <richard.maw@codethink.co.uk> | 2012-01-17 14:43:55 +0000 |
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committer | Richard Maw <richard.maw@codethink.co.uk> | 2012-01-17 14:43:55 +0000 |
commit | 2de9abc5c9d40b3c716307d67d16146f823fd554 (patch) | |
tree | 6979db67934ddc8b564150b465846a383b428ff8 /gnulib/lib/fopen.c | |
parent | 33cc1c6fda6e72a7bae1401e9b2cec495a4d3ff1 (diff) | |
download | patch-baserock/bootstrap-pass2.tar.gz |
add the output of bootstrapbaserock/bootstrap-pass2baserock/bootstrap
Diffstat (limited to 'gnulib/lib/fopen.c')
m--------- | gnulib | 0 | ||||
-rw-r--r-- | gnulib/lib/fopen.c | 110 |
2 files changed, 110 insertions, 0 deletions
diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 443bc5ffcf7429e557f4a371b0661abe98ddbc1 diff --git a/gnulib/lib/fopen.c b/gnulib/lib/fopen.c new file mode 100644 index 0000000..e9ba6bb --- /dev/null +++ b/gnulib/lib/fopen.c @@ -0,0 +1,110 @@ +/* Open a stream to a file. + Copyright (C) 2007-2011 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 + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +/* Written by Bruno Haible <bruno@clisp.org>, 2007. */ + +/* If the user's config.h happens to include <stdio.h>, let it include only + the system's <stdio.h> here, so that orig_fopen doesn't recurse to + rpl_fopen. */ +#define __need_FILE +#include <config.h> + +/* Get the original definition of fopen. It might be defined as a macro. */ +#include <stdio.h> +#undef __need_FILE + +static inline FILE * +orig_fopen (const char *filename, const char *mode) +{ + return fopen (filename, mode); +} + +/* Specification. */ +/* Write "stdio.h" here, not <stdio.h>, otherwise OSF/1 5.1 DTK cc eliminates + this include because of the preliminary #include <stdio.h> above. */ +#include "stdio.h" + +#include <errno.h> +#include <fcntl.h> +#include <string.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/stat.h> + +FILE * +rpl_fopen (const char *filename, const char *mode) +{ +#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__ + if (strcmp (filename, "/dev/null") == 0) + filename = "NUL"; +#endif + +#if FOPEN_TRAILING_SLASH_BUG + /* If the filename ends in a slash and a mode that requires write access is + specified, then fail. + Rationale: POSIX <http://www.opengroup.org/susv3/basedefs/xbd_chap04.html> + says that + "A pathname that contains at least one non-slash character and that + ends with one or more trailing slashes shall be resolved as if a + single dot character ( '.' ) were appended to the pathname." + and + "The special filename dot shall refer to the directory specified by + its predecessor." + If the named file already exists as a directory, then if a mode that + requires write access is specified, fopen() must fail because POSIX + <http://www.opengroup.org/susv3/functions/fopen.html> says that it + fails with errno = EISDIR in this case. + If the named file does not exist or does not name a directory, then + fopen() must fail since the file does not contain a '.' directory. */ + { + size_t len = strlen (filename); + if (len > 0 && filename[len - 1] == '/') + { + int fd; + struct stat statbuf; + FILE *fp; + + if (mode[0] == 'w' || mode[0] == 'a') + { + errno = EISDIR; + return NULL; + } + + fd = open (filename, O_RDONLY); + if (fd < 0) + return NULL; + + if (fstat (fd, &statbuf) >= 0 && !S_ISDIR (statbuf.st_mode)) + { + close (fd); + errno = ENOTDIR; + return NULL; + } + + fp = fdopen (fd, mode); + if (fp == NULL) + { + int saved_errno = errno; + close (fd); + errno = saved_errno; + } + return fp; + } + } +# endif + + return orig_fopen (filename, mode); +} |