github.com/bgentry/go@v0.0.0-20150121062915-6cf5a733d54d/src/lib9/tempdir_plan9.c (about)

     1  // Copyright 2013 The Go Authors.  All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // +build plan9
     6  
     7  #include <u.h>
     8  #include <libc.h>
     9  
    10  char*
    11  mktempdir(void)
    12  {
    13  	char *p;
    14  	int fd, i;
    15  	
    16  	p = smprint("/tmp/go-link-XXXXXX");
    17  	for(i=0; i<1000; i++) {
    18  		sprint(p, "/tmp/go-link-%06x", nrand((1<<24)-1));
    19  		fd = create(p, OREAD|OEXCL, 0700|DMDIR);
    20  		if(fd >= 0) {
    21  			close(fd);
    22  			return p;
    23  		}
    24  	}
    25  	free(p);
    26  	return nil;
    27  }
    28  
    29  void
    30  removeall(char *p)
    31  {
    32  	int fd, n, i;
    33  	Dir *d;
    34  	char *q;
    35  	
    36  	if(remove(p) >= 0)
    37  		return;
    38  	if((d = dirstat(p)) == nil)
    39  		return;
    40  	if(!(d->mode & DMDIR)) {
    41  		free(d);
    42  		return;
    43  	}
    44  	free(d);
    45  	
    46  	if((fd = open(p, OREAD)) < 0)
    47  		return;
    48  	n = dirreadall(fd, &d);
    49  	close(fd);
    50  	for(i=0; i<n; i++) {
    51  		q = smprint("%s/%s", p, d[i].name);
    52  		removeall(q);
    53  		free(q);
    54  	}
    55  	free(d);
    56  }