mirror of https://gitlab.com/QEF/q-e.git
71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/*
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Copyright (C) 2003-2014 Quantum ESPRESSO group
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This file is distributed under the terms of the
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GNU General Public License. See the file `License'
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in the root directory of the present distribution,
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or http://www.gnu.org/copyleft/gpl.txt .
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <errno.h>
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#include <time.h>
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#include <unistd.h>
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#if defined(_WIN32)
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#include <direct.h>
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#endif
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int check_writable_dir(const char *filename) {
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struct stat sb;
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if (stat(filename, &sb) == -1) {
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return -3; /* does not exist */
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/* note: this happens also if looking for "dir/" when there is a file called "dir" */
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}
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if ( (sb.st_mode & S_IFMT) != S_IFDIR) {
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fprintf( stderr , "\ncheck_writable_dir fail: file '%s' exists but is NOT a directory\n", filename ) ;
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return -2; /* not a directory */
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}
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/* if ( ! (sb.st_mode & S_IWUSR) ) return -4; */ /* not writeble by owner */
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/* return 0 if I can read, write and execute (enter) this directory, -1 otherwise
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note: we do not actually need R_OK in Quantum-ESPRESSO;
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W_OK is definitely needed, about X_OK I'm not sure */
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#if !defined(_WIN32)
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if ( access(filename, W_OK|R_OK|X_OK ) ) {
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fprintf( stderr , "\ncheck_writable_dir fail: insufficient permissions to access '%s'\n", filename ) ;
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return -1; /* no permissions */
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}
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#endif
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return 0;
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} /* check_writable_dir */
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int c_mkdir_safe( const char * dirname )
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{
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int retval = -1 ;
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/* return directly -1 if directory exists and is writable */
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if ( check_writable_dir(dirname) == 0) return -1;
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#if defined(_WIN32)
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retval = _mkdir( dirname ) ;
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#else
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mode_t mode = 0777 ;
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retval = mkdir( dirname , mode ) ;
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#endif
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if ( retval == -1 && errno != EEXIST ) {
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fprintf( stderr , "\nmkdir fail: [%d] %s\n" , errno , strerror( errno ) ) ;
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retval = 1 ;
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}
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/* double check that the directory is a directory and has the good permissions */
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if ( check_writable_dir(dirname) < 0) retval = 1;
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return retval ;
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}
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/* EOF */
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