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rename.c
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1994-02-14
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/* rename - change the name of file
* 91.11.02 by Tomohiro Ishikawa (ishikawa@gaia.cow.melco.CO.JP)
* 92.01.20 little modified (added #ifdef) by Masaru Oki
*/
#ifdef NOFTRUNCATE
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
int
rename(from, to)
char *from, *to;
{
struct stat s1,s2;
extern int errno;
if (stat(from, &s1) < 0)
return(-1);
/* is 'FROM' file a directory? */
if ((s1.st_mode & S_IFMT) == S_IFDIR){
errno = ENOTDIR;
return(-1);
}
if (stat(to, &s2) >= 0) { /* 'TO' exists! */
/* is 'TO' file a directory? */
if ((s2.st_mode & S_IFMT) == S_IFDIR){
errno=EISDIR;
return(-1);
}
if (unlink(to) < 0)
return(-1);
}
if (link(from, to) < 0)
return(-1);
if (unlink(from) < 0)
return(-1);
return(0);
}
#endif /* NOFTRUNCATE */
#ifdef NOMKDIR
#ifndef NOFTRUNCATE
#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#endif
#ifndef MKDIRPATH
#define MKDIRPATH "/bin/mkdir"
#endif
#ifndef RMDIRPATH
#define RMDIRPATH "/bin/rmdir"
#endif
int
rmdir(path)
char *path;
{
int stat,rtn=0;
char *cmdname;
if ( (cmdname=(char *)malloc(strlen(RMDIRPATH)+1+strlen(path)+1)) == 0)
return(-1);
strcpy(cmdname,RMDIRPATH);
*(cmdname+strlen(RMDIRPATH))=' ';
strcpy(cmdname+strlen(RMDIRPATH)+1,path);
if ((stat = system(cmdname))<0)
rtn=-1; /* fork or exec error */
else if(stat){ /* RMDIR command error */
errno = EIO;
rtn=-1;
}
free(cmdname);
return(rtn);
}
int
mkdir(path,mode)
char *path;
int mode;
{
int child, stat;
char *cmdname,*cmdpath=MKDIRPATH;
if ( (cmdname=(char *)strrchr(cmdpath,'/'))==(char *)0)
cmdname=cmdpath;
if ((child = fork())<0)
return(-1); /* fork error */
else if(child) { /* parent process */
while (child != wait(&stat)) /* ignore signals */
continue;
}
else{ /* child process */
int maskvalue;
maskvalue = umask(0); /* get current umask() value */
umask(maskvalue | (0777 & ~mode)); /* set it! */
execl(cmdpath, cmdname, path, (char *)0);
/* never come here except execl is error */
return(-1);
}
if (stat != 0) {
errno = EIO; /* cannot get error num. */
return(-1);
}
return(0);
}
#endif