Staging
v0.8.1
v0.8.1
swh:1:snp:a902887e4be9191b7c6c4406aa06b31c1ce2c7cc
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- v3.9-rc8
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- v3.19-rc1
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- v3.18-rc7
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- v3.16-rc1
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- v3.14-rc8
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- v3.10
- v3.1-rc9
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- v3.0-rc1
- v3.0
- v2.6.39-rc7
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- v2.6.38-rc1
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- v2.6.32
- v2.6.31-rc9
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- v2.6.31-rc1
- v2.6.31
- v2.6.30-rc8
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- v2.6.30-rc1
- v2.6.30
- v2.6.29-rc8
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- v2.6.29-rc1
- v2.6.29
- v2.6.28-rc9
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- v2.6.28-rc1
- v2.6.28
- v2.6.27-rc9
- v2.6.27-rc8
- v2.6.27-rc7
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- v2.6.27-rc1
- v2.6.27
- v2.6.26-rc9
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- v2.6.26-rc1
- v2.6.26
- v2.6.25-rc9
- v2.6.25-rc8
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- v2.6.25-rc1
- v2.6.25
- v2.6.24-rc8
- v2.6.24-rc7
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- v2.6.24-rc3
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- v2.6.24-rc1
- v2.6.24
- v2.6.23-rc9
- v2.6.23-rc8
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- v2.6.23-rc1
- v2.6.23
- v2.6.22-rc7
- v2.6.22-rc6
- v2.6.22-rc5
- v2.6.22-rc4
- v2.6.22-rc3
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- v2.6.22-rc1
- v2.6.22
- v2.6.21-rc7
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- v2.6.21-rc1
- v2.6.21
- v2.6.20-rc7
- v2.6.20-rc6
- v2.6.20-rc5
- v2.6.20-rc4
- v2.6.20-rc3
- v2.6.20-rc2
- v2.6.20-rc1
- v2.6.20
- v2.6.19-rc6
- v2.6.19-rc5
- v2.6.19-rc4
- v2.6.19-rc3
- v2.6.19-rc2
- v2.6.19-rc1
- v2.6.19
- v2.6.18-rc7
- v2.6.18-rc6
- v2.6.18-rc5
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- v2.6.18-rc1
- v2.6.18
- v2.6.17-rc6
- v2.6.17-rc5
- v2.6.17-rc4
- v2.6.17-rc3
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- v2.6.17-rc1
- v2.6.17
- v2.6.16-rc6
- v2.6.16-rc5
- v2.6.16-rc4
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- v2.6.16-rc1
- v2.6.16
- v2.6.15-rc7
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- v2.6.15-rc1
- v2.6.15
- v2.6.14-rc5
- v2.6.14-rc4
- v2.6.14-rc3
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Tip revision: d72e90f33aa4709ebecc5005562f52335e106a60 authored by Linus Torvalds on 22 July 2018, 21:12:20 UTC
Linux 4.18-rc6
Linux 4.18-rc6
Tip revision: d72e90f
path.c
// SPDX-License-Identifier: GPL-2.0
/*
* I'm tired of doing "vsnprintf()" etc just to open a
* file, so here's a "return static buffer with printf"
* interface for paths.
*
* It's obviously not thread-safe. Sue me. But it's quite
* useful for doing things like
*
* f = open(mkpath("%s/%s.perf", base, name), O_RDONLY);
*
* which is what it's designed for.
*/
#include "cache.h"
#include "path.h"
#include <linux/kernel.h>
#include <limits.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <unistd.h>
static char bad_path[] = "/bad-path/";
/*
* One hack:
*/
static char *get_pathname(void)
{
static char pathname_array[4][PATH_MAX];
static int idx;
return pathname_array[3 & ++idx];
}
static char *cleanup_path(char *path)
{
/* Clean it up */
if (!memcmp(path, "./", 2)) {
path += 2;
while (*path == '/')
path++;
}
return path;
}
char *mkpath(const char *fmt, ...)
{
va_list args;
unsigned len;
char *pathname = get_pathname();
va_start(args, fmt);
len = vsnprintf(pathname, PATH_MAX, fmt, args);
va_end(args);
if (len >= PATH_MAX)
return bad_path;
return cleanup_path(pathname);
}
int path__join(char *bf, size_t size, const char *path1, const char *path2)
{
return scnprintf(bf, size, "%s%s%s", path1, path1[0] ? "/" : "", path2);
}
int path__join3(char *bf, size_t size, const char *path1, const char *path2, const char *path3)
{
return scnprintf(bf, size, "%s%s%s%s%s", path1, path1[0] ? "/" : "",
path2, path2[0] ? "/" : "", path3);
}
bool is_regular_file(const char *file)
{
struct stat st;
if (stat(file, &st))
return false;
return S_ISREG(st.st_mode);
}
/* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */
bool is_directory(const char *base_path, const struct dirent *dent)
{
char path[PATH_MAX];
struct stat st;
sprintf(path, "%s/%s", base_path, dent->d_name);
if (stat(path, &st))
return false;
return S_ISDIR(st.st_mode);
}