diff options
Diffstat (limited to 'dep/mysqllite/mysys/my_symlink.c')
| -rw-r--r-- | dep/mysqllite/mysys/my_symlink.c | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/dep/mysqllite/mysys/my_symlink.c b/dep/mysqllite/mysys/my_symlink.c deleted file mode 100644 index 053fc887fe8..00000000000 --- a/dep/mysqllite/mysys/my_symlink.c +++ /dev/null @@ -1,167 +0,0 @@ -/* Copyright (C) 2000 MySQL AB - - 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; version 2 of the License. - - 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, write to the Free Software - Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ - -#include "mysys_priv.h" -#include "mysys_err.h" -#include <m_string.h> -#include <errno.h> -#ifdef HAVE_REALPATH -#include <sys/param.h> -#include <sys/stat.h> -#endif - -/* - Reads the content of a symbolic link - If the file is not a symbolic link, return the original file name in to. - - RETURN - 0 If filename was a symlink, (to will be set to value of symlink) - 1 If filename was a normal file (to will be set to filename) - -1 on error. -*/ - -int my_readlink(char *to, const char *filename, myf MyFlags) -{ -#ifndef HAVE_READLINK - strmov(to,filename); - return 1; -#else - int result=0; - int length; - DBUG_ENTER("my_readlink"); - - if ((length=readlink(filename, to, FN_REFLEN-1)) < 0) - { - /* Don't give an error if this wasn't a symlink */ - if ((my_errno=errno) == EINVAL) - { - result= 1; - strmov(to,filename); - } - else - { - if (MyFlags & MY_WME) - my_error(EE_CANT_READLINK, MYF(0), filename, errno); - result= -1; - } - } - else - to[length]=0; - DBUG_PRINT("exit" ,("result: %d", result)); - DBUG_RETURN(result); -#endif /* HAVE_READLINK */ -} - - -/* Create a symbolic link */ - -int my_symlink(const char *content, const char *linkname, myf MyFlags) -{ -#ifndef HAVE_READLINK - return 0; -#else - int result; - DBUG_ENTER("my_symlink"); - DBUG_PRINT("enter",("content: %s linkname: %s", content, linkname)); - - result= 0; - if (symlink(content, linkname)) - { - result= -1; - my_errno=errno; - if (MyFlags & MY_WME) - my_error(EE_CANT_SYMLINK, MYF(0), linkname, content, errno); - } - else if ((MyFlags & MY_SYNC_DIR) && my_sync_dir_by_file(linkname, MyFlags)) - result= -1; - DBUG_RETURN(result); -#endif /* HAVE_READLINK */ -} - -#if defined(SCO) -#define BUFF_LEN 4097 -#elif defined(MAXPATHLEN) -#define BUFF_LEN MAXPATHLEN -#else -#define BUFF_LEN FN_LEN -#endif - - -int my_is_symlink(const char *filename __attribute__((unused))) -{ -#if defined (HAVE_LSTAT) && defined (S_ISLNK) - struct stat stat_buff; - return !lstat(filename, &stat_buff) && S_ISLNK(stat_buff.st_mode); -#elif defined (_WIN32) - DWORD dwAttr = GetFileAttributes(filename); - return (dwAttr != INVALID_FILE_ATTRIBUTES) && - (dwAttr & FILE_ATTRIBUTE_REPARSE_POINT); -#else /* No symlinks */ - return 0; -#endif -} - -/* - Resolve all symbolic links in path - 'to' may be equal to 'filename' -*/ - -int my_realpath(char *to, const char *filename, myf MyFlags) -{ -#if defined(HAVE_REALPATH) && !defined(HAVE_BROKEN_REALPATH) - int result=0; - char buff[BUFF_LEN]; - char *ptr; - DBUG_ENTER("my_realpath"); - - DBUG_PRINT("info",("executing realpath")); - if ((ptr=realpath(filename,buff))) - strmake(to,ptr,FN_REFLEN-1); - else - { - /* - Realpath didn't work; Use my_load_path() which is a poor substitute - original name but will at least be able to resolve paths that starts - with '.'. - */ - DBUG_PRINT("error",("realpath failed with errno: %d", errno)); - my_errno=errno; - if (MyFlags & MY_WME) - my_error(EE_REALPATH, MYF(0), filename, my_errno); - my_load_path(to, filename, NullS); - result= -1; - } - DBUG_RETURN(result); -#else -#ifdef _WIN32 - int ret= GetFullPathName(filename,FN_REFLEN, - to, - NULL); - if (ret == 0 || ret > FN_REFLEN) - { - if (ret > FN_REFLEN) - my_errno= ENAMETOOLONG; - else - my_errno= EACCES; - if (MyFlags & MY_WME) - my_error(EE_REALPATH, MYF(0), filename, my_errno); - return -1; - } -#else - my_load_path(to, filename, NullS); -#endif - return 0; -#endif -} |