/* Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ /* TODO: check for overun of memory for names. */ #include "mysys_priv.h" #include #include /* Structs used by my_dir,includes sys/types */ #include "mysys_err.h" #if defined(HAVE_DIRENT_H) # include # define NAMLEN(dirent) strlen((dirent)->d_name) #else # define dirent direct # define NAMLEN(dirent) (dirent)->d_namlen # if defined(HAVE_SYS_NDIR_H) # include # endif # if defined(HAVE_SYS_DIR_H) # include # endif # if defined(HAVE_NDIR_H) # include # endif # if defined(_WIN32) # ifdef __BORLANDC__ # include # endif # endif #endif #if defined(HAVE_READDIR_R) #define READDIR(A,B,C) ((errno=readdir_r(A,B,&C)) != 0 || !C) #else #define READDIR(A,B,C) (!(C=readdir(A))) #endif /* We are assuming that directory we are reading is either has less than 100 files and so can be read in one initial chunk or has more than 1000 files and so big increment are suitable. */ #define ENTRIES_START_SIZE (8192/sizeof(FILEINFO)) #define ENTRIES_INCREMENT (65536/sizeof(FILEINFO)) #define NAMES_START_SIZE 32768 static int comp_names(struct fileinfo *a,struct fileinfo *b); /* We need this because program don't know with malloc we used */ void my_dirend(MY_DIR *buffer) { DBUG_ENTER("my_dirend"); if (buffer) { delete_dynamic((DYNAMIC_ARRAY*)((char*)buffer + ALIGN_SIZE(sizeof(MY_DIR)))); free_root((MEM_ROOT*)((char*)buffer + ALIGN_SIZE(sizeof(MY_DIR)) + ALIGN_SIZE(sizeof(DYNAMIC_ARRAY))), MYF(0)); my_free(buffer); } DBUG_VOID_RETURN; } /* my_dirend */ /* Compare in sort of filenames */ static int comp_names(struct fileinfo *a, struct fileinfo *b) { return (strcmp(a->name,b->name)); } /* comp_names */ #if !defined(_WIN32) MY_DIR *my_dir(const char *path, myf MyFlags) { char *buffer; MY_DIR *result= 0; FILEINFO finfo; DYNAMIC_ARRAY *dir_entries_storage; MEM_ROOT *names_storage; DIR *dirp; struct dirent *dp; char tmp_path[FN_REFLEN+1],*tmp_file; char dirent_tmp[sizeof(struct dirent)+_POSIX_PATH_MAX+1]; DBUG_ENTER("my_dir"); DBUG_PRINT("my",("path: '%s' MyFlags: %d",path,MyFlags)); #if !defined(HAVE_READDIR_R) mysql_mutex_lock(&THR_LOCK_open); #endif dirp = opendir(directory_file_name(tmp_path,(char *) path)); #if defined(__amiga__) if ((dirp->dd_fd) < 0) /* Directory doesn't exists */ goto error; #endif if (dirp == NULL || ! (buffer= my_malloc(ALIGN_SIZE(sizeof(MY_DIR)) + ALIGN_SIZE(sizeof(DYNAMIC_ARRAY)) + sizeof(MEM_ROOT), MyFlags))) goto error; dir_entries_storage= (DYNAMIC_ARRAY*)(buffer + ALIGN_SIZE(sizeof(MY_DIR))); names_storage= (MEM_ROOT*)(buffer + ALIGN_SIZE(sizeof(MY_DIR)) + ALIGN_SIZE(sizeof(DYNAMIC_ARRAY))); if (my_init_dynamic_array(dir_entries_storage, sizeof(FILEINFO), ENTRIES_START_SIZE, ENTRIES_INCREMENT)) { my_free(buffer); goto error; } init_alloc_root(names_storage, NAMES_START_SIZE, NAMES_START_SIZE); /* MY_DIR structure is allocated and completly initialized at this point */ result= (MY_DIR*)buffer; tmp_file=strend(tmp_path); dp= (struct dirent*) dirent_tmp; while (!(READDIR(dirp,(struct dirent*) dirent_tmp,dp))) { if (!(finfo.name= strdup_root(names_storage, dp->d_name))) goto error; if (MyFlags & MY_WANT_STAT) { if (!(finfo.mystat= (MY_STAT*)alloc_root(names_storage, sizeof(MY_STAT)))) goto error; bzero(finfo.mystat, sizeof(MY_STAT)); (void) strmov(tmp_file,dp->d_name); (void) my_stat(tmp_path, finfo.mystat, MyFlags); if (!(finfo.mystat->st_mode & MY_S_IREAD)) continue; } else finfo.mystat= NULL; if (push_dynamic(dir_entries_storage, (uchar*)&finfo)) goto error; } (void) closedir(dirp); #if !defined(HAVE_READDIR_R) mysql_mutex_unlock(&THR_LOCK_open); #endif result->dir_entry= (FILEINFO *)dir_entries_storage->buffer; result->number_off_files= dir_entries_storage->elements; if (!(MyFlags & MY_DONT_SORT)) my_qsort((void *) result->dir_entry, result->number_off_files, sizeof(FILEINFO), (qsort_cmp) comp_names); DBUG_RETURN(result); error: #if !defined(HAVE_READDIR_R) mysql_mutex_unlock(&THR_LOCK_open); #endif my_errno=errno; if (dirp) (void) closedir(dirp); my_dirend(result); if (MyFlags & (MY_FAE | MY_WME)) my_error(EE_DIR,MYF(ME_BELL+ME_WAITTANG),path,my_errno); DBUG_RETURN((MY_DIR *) NULL); } /* my_dir */ /* * Convert from directory name to filename. * On UNIX, it's simple: just make sure there is a terminating / * Returns pointer to dst; */ char * directory_file_name (char * dst, const char *src) { /* Process as Unix format: just remove test the final slash. */ char *end; if (src[0] == 0) src= (char*) "."; /* Use empty as current */ end=strmov(dst, src); if (end[-1] != FN_LIBCHAR) { end[0]=FN_LIBCHAR; /* Add last '/' */ end[1]='\0'; } return dst; } #else /* ***************************************************************************** ** Read long filename using windows rutines ***************************************************************************** */ MY_DIR *my_dir(const char *path, myf MyFlags) { char *buffer; MY_DIR *result= 0; FILEINFO finfo; DYNAMIC_ARRAY *dir_entries_storage; MEM_ROOT *names_storage; #ifdef __BORLANDC__ struct ffblk find; #else struct _finddata_t find; #endif ushort mode; char tmp_path[FN_REFLEN],*tmp_file,attrib; #ifdef _WIN64 __int64 handle; #else long handle; #endif DBUG_ENTER("my_dir"); DBUG_PRINT("my",("path: '%s' stat: %d MyFlags: %d",path,MyFlags)); /* Put LIB-CHAR as last path-character if not there */ tmp_file=tmp_path; if (!*path) *tmp_file++ ='.'; /* From current dir */ tmp_file= strnmov(tmp_file, path, FN_REFLEN-5); if (tmp_file[-1] == FN_DEVCHAR) *tmp_file++= '.'; /* From current dev-dir */ if (tmp_file[-1] != FN_LIBCHAR) *tmp_file++ =FN_LIBCHAR; tmp_file[0]='*'; /* Windows needs this !??? */ tmp_file[1]='.'; tmp_file[2]='*'; tmp_file[3]='\0'; if (!(buffer= my_malloc(ALIGN_SIZE(sizeof(MY_DIR)) + ALIGN_SIZE(sizeof(DYNAMIC_ARRAY)) + sizeof(MEM_ROOT), MyFlags))) goto error; dir_entries_storage= (DYNAMIC_ARRAY*)(buffer + ALIGN_SIZE(sizeof(MY_DIR))); names_storage= (MEM_ROOT*)(buffer + ALIGN_SIZE(sizeof(MY_DIR)) + ALIGN_SIZE(sizeof(DYNAMIC_ARRAY))); if (my_init_dynamic_array(dir_entries_storage, sizeof(FILEINFO), ENTRIES_START_SIZE, ENTRIES_INCREMENT)) { my_free(buffer); goto error; } init_alloc_root(names_storage, NAMES_START_SIZE, NAMES_START_SIZE); /* MY_DIR structure is allocated and completly initialized at this point */ result= (MY_DIR*)buffer; #ifdef __BORLANDC__ if ((handle= findfirst(tmp_path,&find,0)) == -1L) #else if ((handle=_findfirst(tmp_path,&find)) == -1L) #endif { DBUG_PRINT("info", ("findfirst returned error, errno: %d", errno)); if (errno != EINVAL) goto error; /* Could not read the directory, no read access. Probably because by "chmod -r". continue and return zero files in dir */ } else { do { #ifdef __BORLANDC__ attrib= find.ff_attrib; #else attrib= find.attrib; /* Do not show hidden and system files which Windows sometimes create. Note. Because Borland's findfirst() is called with the third argument = 0 hidden/system files are excluded from the search. */ if (attrib & (_A_HIDDEN | _A_SYSTEM)) continue; #endif #ifdef __BORLANDC__ if (!(finfo.name= strdup_root(names_storage, find.ff_name))) goto error; #else if (!(finfo.name= strdup_root(names_storage, find.name))) goto error; #endif if (MyFlags & MY_WANT_STAT) { if (!(finfo.mystat= (MY_STAT*)alloc_root(names_storage, sizeof(MY_STAT)))) goto error; bzero(finfo.mystat, sizeof(MY_STAT)); #ifdef __BORLANDC__ finfo.mystat->st_size=find.ff_fsize; #else finfo.mystat->st_size=find.size; #endif mode= MY_S_IREAD; if (!(attrib & _A_RDONLY)) mode|= MY_S_IWRITE; if (attrib & _A_SUBDIR) mode|= MY_S_IFDIR; finfo.mystat->st_mode= mode; #ifdef __BORLANDC__ finfo.mystat->st_mtime= ((uint32) find.ff_ftime); #else finfo.mystat->st_mtime= ((uint32) find.time_write); #endif } else finfo.mystat= NULL; if (push_dynamic(dir_entries_storage, (uchar*)&finfo)) goto error; } #ifdef __BORLANDC__ while (findnext(&find) == 0); #else while (_findnext(handle,&find) == 0); _findclose(handle); #endif } result->dir_entry= (FILEINFO *)dir_entries_storage->buffer; result->number_off_files= dir_entries_storage->elements; if (!(MyFlags & MY_DONT_SORT)) my_qsort((void *) result->dir_entry, result->number_off_files, sizeof(FILEINFO), (qsort_cmp) comp_names); DBUG_PRINT("exit", ("found %d files", result->number_off_files)); DBUG_RETURN(result); error: my_errno=errno; #ifndef __BORLANDC__ if (handle != -1) _findclose(handle); #endif my_dirend(result); if (MyFlags & MY_FAE+MY_WME) my_error(EE_DIR,MYF(ME_BELL+ME_WAITTANG),path,errno); DBUG_RETURN((MY_DIR *) NULL); } /* my_dir */ #endif /* _WIN32 */ /**************************************************************************** ** File status ** Note that MY_STAT is assumed to be same as struct stat ****************************************************************************/ int my_fstat(File Filedes, MY_STAT *stat_area, myf MyFlags __attribute__((unused))) { DBUG_ENTER("my_fstat"); DBUG_PRINT("my",("fd: %d MyFlags: %d", Filedes, MyFlags)); #ifdef _WIN32 DBUG_RETURN(my_win_fstat(Filedes, stat_area)); #else DBUG_RETURN(fstat(Filedes, (struct stat *) stat_area)); #endif } MY_STAT *my_stat(const char *path, MY_STAT *stat_area, myf my_flags) { int m_used; DBUG_ENTER("my_stat"); DBUG_PRINT("my", ("path: '%s' stat_area: 0x%lx MyFlags: %d", path, (long) stat_area, my_flags)); if ((m_used= (stat_area == NULL))) if (!(stat_area= (MY_STAT *) my_malloc(sizeof(MY_STAT), my_flags))) goto error; #ifndef _WIN32 if (! stat((char *) path, (struct stat *) stat_area) ) DBUG_RETURN(stat_area); #else if (! my_win_stat(path, stat_area) ) DBUG_RETURN(stat_area); #endif DBUG_PRINT("error",("Got errno: %d from stat", errno)); my_errno= errno; if (m_used) /* Free if new area */ my_free(stat_area); error: if (my_flags & (MY_FAE+MY_WME)) { my_error(EE_STAT, MYF(ME_BELL+ME_WAITTANG),path,my_errno); DBUG_RETURN((MY_STAT *) NULL); } DBUG_RETURN((MY_STAT *) NULL); } /* my_stat */