2
Simple DirectMedia Layer
3
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
5
This software is provided 'as-is', without any express or implied
6
warranty. In no event will the authors be held liable for any damages
7
arising from the use of this software.
9
Permission is granted to anyone to use this software for any purpose,
10
including commercial applications, and to alter it and redistribute it
11
freely, subject to the following restrictions:
13
1. The origin of this software must not be misrepresented; you must not
14
claim that you wrote the original software. If you use this software
15
in a product, an acknowledgment in the product documentation would be
16
appreciated but is not required.
17
2. Altered source versions must be plainly marked as such, and must not be
18
misrepresented as being the original software.
19
3. This notice may not be removed or altered from any source distribution.
21
#include "SDL_config.h"
23
#ifdef SDL_FILESYSTEM_UNIX
25
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
26
/* System dependent filesystem routines */
33
#include <sys/types.h>
37
#include <sys/sysctl.h>
40
#include "SDL_error.h"
41
#include "SDL_stdinc.h"
42
#include "SDL_filesystem.h"
45
readSymLink(const char *path)
53
char *ptr = (char *) SDL_realloc(retval, (size_t) len);
61
rc = readlink(path, retval, len);
63
break; /* not a symlink, i/o error, etc. */
64
} else if (rc < len) {
65
retval[rc] = '\0'; /* readlink doesn't null-terminate. */
66
return retval; /* we're good to go. */
69
len *= 2; /* grow buffer, try again. */
82
#if defined(__FREEBSD__)
83
char fullpath[PATH_MAX];
84
size_t buflen = sizeof (fullpath);
85
const int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
86
if (sysctl(mib, SDL_arraysize(mib), fullpath, &buflen, NULL, 0) != -1) {
87
retval = SDL_strdup(fullpath);
93
#elif defined(__SOLARIS__)
94
const char *path = getexecname();
95
if ((path != NULL) && (path[0] == '/')) { /* must be absolute path... */
96
retval = SDL_strdup(path);
104
/* is a Linux-style /proc filesystem available? */
105
if (!retval && (access("/proc", F_OK) == 0)) {
106
#if defined(__FREEBSD__)
107
retval = readSymLink("/proc/curproc/file");
108
#elif defined(__NETBSD__)
109
retval = readSymLink("/proc/curproc/exe");
111
retval = readSymLink("/proc/self/exe"); /* linux. */
113
if (retval == NULL) {
114
/* older kernels don't have /proc/self ... try PID version... */
116
const int rc = (int) SDL_snprintf(path, sizeof(path),
118
(unsigned long long) getpid());
119
if ( (rc > 0) && (rc < sizeof(path)) ) {
120
retval = readSymLink(path);
125
/* If we had access to argv[0] here, we could check it for a path,
126
or troll through $PATH looking for it, too. */
128
if (retval != NULL) { /* chop off filename. */
129
char *ptr = SDL_strrchr(retval, '/');
132
} else { /* shouldn't happen, but just in case... */
138
if (retval != NULL) {
139
/* try to shrink buffer... */
140
char *ptr = (char *) SDL_realloc(retval, strlen(retval) + 1);
142
retval = ptr; /* oh well if it failed. */
149
SDL_GetPrefPath(const char *org, const char *app)
152
* We use XDG's base directory spec, even if you're not on Linux.
153
* This isn't strictly correct, but the results are relatively sane
156
* http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
158
const char *envr = SDL_getenv("XDG_DATA_HOME");
165
/* You end up with "$HOME/.local/share/Game Name 2" */
166
envr = SDL_getenv("HOME");
168
/* we could take heroic measures with /etc/passwd, but oh well. */
169
SDL_SetError("neither XDG_DATA_HOME nor HOME environment is set");
172
append = "/.local/share/";
177
len = SDL_strlen(envr);
178
if (envr[len - 1] == '/')
181
len += SDL_strlen(append) + SDL_strlen(org) + SDL_strlen(app) + 3;
182
retval = (char *) SDL_malloc(len);
188
SDL_snprintf(retval, len, "%s%s%s/%s/", envr, append, org, app);
190
for (ptr = retval+1; *ptr; ptr++) {
193
if (mkdir(retval, 0700) != 0 && errno != EEXIST)
198
if (mkdir(retval, 0700) != 0 && errno != EEXIST) {
200
SDL_SetError("Couldn't create directory '%s': ", retval, strerror(errno));
208
#endif /* SDL_FILESYSTEM_UNIX */
210
/* vi: set ts=4 sw=4 expandtab: */