misc/physfs/src/platform_unix.c
branchphysfslayer
changeset 8522 1853628ae285
parent 8520 1dedcc37bfe8
child 8524 a65e9bcf0a03
--- a/misc/physfs/src/platform_unix.c	Fri Feb 22 05:05:32 2013 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,344 +0,0 @@
-/*
- * Unix support routines for PhysicsFS.
- *
- * Please see the file LICENSE.txt in the source's root directory.
- *
- *  This file written by Ryan C. Gordon.
- */
-
-#define __PHYSICSFS_INTERNAL__
-#include "physfs_platforms.h"
-
-#ifdef PHYSFS_PLATFORM_UNIX
-
-#include <ctype.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <pwd.h>
-#include <sys/stat.h>
-#include <sys/param.h>
-#include <dirent.h>
-#include <time.h>
-#include <errno.h>
-
-#if PHYSFS_PLATFORM_LINUX && !defined(PHYSFS_HAVE_MNTENT_H)
-#define PHYSFS_HAVE_MNTENT_H 1
-#elif PHYSFS_PLATFORM_SOLARIS && !defined(PHYSFS_HAVE_SYS_MNTTAB_H)
-#define PHYSFS_HAVE_SYS_MNTTAB_H 1
-#elif PHYSFS_PLATFORM_BSD && !defined(PHYSFS_HAVE_SYS_UCRED_H)
-#define PHYSFS_HAVE_SYS_UCRED_H 1
-#endif
-
-#ifdef PHYSFS_HAVE_SYS_UCRED_H
-#  ifdef PHYSFS_HAVE_MNTENT_H
-#    undef PHYSFS_HAVE_MNTENT_H /* don't do both... */
-#  endif
-#  include <sys/mount.h>
-#  include <sys/ucred.h>
-#endif
-
-#ifdef PHYSFS_HAVE_MNTENT_H
-#include <mntent.h>
-#endif
-
-#ifdef PHYSFS_HAVE_SYS_MNTTAB_H
-#include <sys/mnttab.h>
-#endif
-
-#include "physfs_internal.h"
-
-int __PHYSFS_platformInit(void)
-{
-    return 1;  /* always succeed. */
-} /* __PHYSFS_platformInit */
-
-
-int __PHYSFS_platformDeinit(void)
-{
-    return 1;  /* always succeed. */
-} /* __PHYSFS_platformDeinit */
-
-
-/* Stub version for platforms without CD-ROM support. */
-void __PHYSFS_platformDetectAvailableCDs(PHYSFS_StringCallback cb, void *data)
-{
-#if (defined PHYSFS_NO_CDROM_SUPPORT)
-    /* no-op. */
-
-#elif (defined PHYSFS_HAVE_SYS_UCRED_H)
-    int i;
-    struct statfs *mntbufp = NULL;
-    int mounts = getmntinfo(&mntbufp, MNT_WAIT);
-
-    for (i = 0; i < mounts; i++)
-    {
-        int add_it = 0;
-
-        if (strcmp(mntbufp[i].f_fstypename, "iso9660") == 0)
-            add_it = 1;
-        else if (strcmp( mntbufp[i].f_fstypename, "cd9660") == 0)
-            add_it = 1;
-
-        /* add other mount types here */
-
-        if (add_it)
-            cb(data, mntbufp[i].f_mntonname);
-    } /* for */
-
-#elif (defined PHYSFS_HAVE_MNTENT_H)
-    FILE *mounts = NULL;
-    struct mntent *ent = NULL;
-
-    mounts = setmntent("/etc/mtab", "r");
-    BAIL_IF_MACRO(mounts == NULL, PHYSFS_ERR_IO, /*return void*/);
-
-    while ( (ent = getmntent(mounts)) != NULL )
-    {
-        int add_it = 0;
-        if (strcmp(ent->mnt_type, "iso9660") == 0)
-            add_it = 1;
-        else if (strcmp(ent->mnt_type, "udf") == 0)
-            add_it = 1;
-
-        /* !!! FIXME: these might pick up floppy drives, right? */
-        else if (strcmp(ent->mnt_type, "auto") == 0)
-            add_it = 1;
-        else if (strcmp(ent->mnt_type, "supermount") == 0)
-            add_it = 1;
-
-        /* !!! FIXME: udf? automount? */
-
-        /* add other mount types here */
-
-        if (add_it)
-            cb(data, ent->mnt_dir);
-    } /* while */
-
-    endmntent(mounts);
-
-#elif (defined PHYSFS_HAVE_SYS_MNTTAB_H)
-    FILE *mounts = fopen(MNTTAB, "r");
-    struct mnttab ent;
-
-    BAIL_IF_MACRO(mounts == NULL, PHYSFS_ERR_IO, /*return void*/);
-    while (getmntent(mounts, &ent) == 0)
-    {
-        int add_it = 0;
-        if (strcmp(ent.mnt_fstype, "hsfs") == 0)
-            add_it = 1;
-
-        /* add other mount types here */
-
-        if (add_it)
-            cb(data, ent.mnt_mountp);
-    } /* while */
-
-    fclose(mounts);
-
-#else
-#error Unknown platform. Should have defined PHYSFS_NO_CDROM_SUPPORT, perhaps.
-#endif
-} /* __PHYSFS_platformDetectAvailableCDs */
-
-
-/*
- * See where program (bin) resides in the $PATH specified by (envr).
- *  returns a copy of the first element in envr that contains it, or NULL
- *  if it doesn't exist or there were other problems. PHYSFS_SetError() is
- *  called if we have a problem.
- *
- * (envr) will be scribbled over, and you are expected to allocator.Free() the
- *  return value when you're done with it.
- */
-static char *findBinaryInPath(const char *bin, char *envr)
-{
-    size_t alloc_size = 0;
-    char *exe = NULL;
-    char *start = envr;
-    char *ptr;
-
-    assert(bin != NULL);
-    assert(envr != NULL);
-
-    do
-    {
-        size_t size;
-        size_t binlen;
-
-        ptr = strchr(start, ':');  /* find next $PATH separator. */
-        if (ptr)
-            *ptr = '\0';
-
-        binlen = strlen(bin);
-        size = strlen(start) + binlen + 2;
-        if (size > alloc_size)
-        {
-            char *x = (char *) allocator.Realloc(exe, size);
-            if (!x)
-            {
-                if (exe != NULL)
-                    allocator.Free(exe);
-                BAIL_MACRO(PHYSFS_ERR_OUT_OF_MEMORY, NULL);
-            } /* if */
-
-            alloc_size = size;
-            exe = x;
-        } /* if */
-
-        /* build full binary path... */
-        strcpy(exe, start);
-        if ((exe[0] == '\0') || (exe[strlen(exe) - 1] != '/'))
-            strcat(exe, "/");
-        strcat(exe, bin);
-
-        if (access(exe, X_OK) == 0)  /* Exists as executable? We're done. */
-        {
-            exe[size - binlen] = '\0'; /* chop off filename, leave '/' */
-            return exe;
-        } /* if */
-
-        start = ptr + 1;  /* start points to beginning of next element. */
-    } while (ptr != NULL);
-
-    if (exe != NULL)
-        allocator.Free(exe);
-
-    return NULL;  /* doesn't exist in path. */
-} /* findBinaryInPath */
-
-
-static char *readSymLink(const char *path)
-{
-    ssize_t len = 64;
-    ssize_t rc = -1;
-    char *retval = NULL;
-
-    while (1)
-    {
-         char *ptr = (char *) allocator.Realloc(retval, (size_t) len);
-         if (ptr == NULL)
-             break;   /* out of memory. */
-         retval = ptr;
-
-         rc = readlink(path, retval, len);
-         if (rc == -1)
-             break;  /* not a symlink, i/o error, etc. */
-
-         else if (rc < len)
-         {
-             retval[rc] = '\0';  /* readlink doesn't null-terminate. */
-             return retval;  /* we're good to go. */
-         } /* else if */
-
-         len *= 2;  /* grow buffer, try again. */
-    } /* while */
-
-    if (retval != NULL)
-        allocator.Free(retval);
-    return NULL;
-} /* readSymLink */
-
-
-char *__PHYSFS_platformCalcBaseDir(const char *argv0)
-{
-    char *retval = NULL;
-    const char *envr = NULL;
-
-    /*
-     * Try to avoid using argv0 unless forced to. If there's a Linux-like
-     *  /proc filesystem, you can get the full path to the current process from
-     *  the /proc/self/exe symlink.
-     */
-    retval = readSymLink("/proc/self/exe");
-    if (retval == NULL)
-    {
-        /* older kernels don't have /proc/self ... try PID version... */
-        const unsigned long long pid = (unsigned long long) getpid();
-        char path[64];
-        const int rc = (int) snprintf(path,sizeof(path),"/proc/%llu/exe",pid);
-        if ( (rc > 0) && (rc < sizeof(path)) )
-            retval = readSymLink(path);
-    } /* if */
-
-    if (retval != NULL)  /* chop off filename. */
-    {
-        char *ptr = strrchr(retval, '/');
-        if (ptr != NULL)
-            *(ptr+1) = '\0';
-        else  /* shouldn't happen, but just in case... */
-        {
-            allocator.Free(retval);
-            retval = NULL;
-        } /* else */
-    } /* if */
-
-    /* No /proc/self/exe, but we have an argv[0] we can parse? */
-    if ((retval == NULL) && (argv0 != NULL))
-    {
-        /* fast path: default behaviour can handle this. */
-        if (strchr(argv0, '/') != NULL)
-            return NULL;  /* higher level parses out real path from argv0. */
-
-        /* If there's no dirsep on argv0, then look through $PATH for it. */
-        envr = getenv("PATH");
-        if (envr != NULL)
-        {
-            char *path = (char *) __PHYSFS_smallAlloc(strlen(envr) + 1);
-            BAIL_IF_MACRO(!path, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
-            strcpy(path, envr);
-            retval = findBinaryInPath(argv0, path);
-            __PHYSFS_smallFree(path);
-        } /* if */
-    } /* if */
-
-    if (retval != NULL)
-    {
-        /* try to shrink buffer... */
-        char *ptr = (char *) allocator.Realloc(retval, strlen(retval) + 1);
-        if (ptr != NULL)
-            retval = ptr;  /* oh well if it failed. */
-    } /* if */
-
-    return retval;
-} /* __PHYSFS_platformCalcBaseDir */
-
-
-char *__PHYSFS_platformCalcPrefDir(const char *org, const char *app)
-{
-    /*
-     * We use XDG's base directory spec, even if you're not on Linux.
-     *  This isn't strictly correct, but the results are relatively sane
-     *  in any case.
-     *
-     * http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
-     */
-    const char *envr = getenv("XDG_DATA_HOME");
-    const char *append = "/";
-    char *retval = NULL;
-    size_t len = 0;
-
-    if (!envr)
-    {
-        /* You end up with "$HOME/.local/share/Game Name 2" */
-        envr = __PHYSFS_getUserDir();
-        BAIL_IF_MACRO(!envr, ERRPASS, NULL);  /* oh well. */
-        append = ".local/share/";
-    } /* if */
-
-    len = strlen(envr) + strlen(append) + strlen(app) + 2;
-    retval = (char *) allocator.Malloc(len);
-    BAIL_IF_MACRO(!retval, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
-    snprintf(retval, len, "%s%s%s/", envr, append, app);
-    return retval;
-} /* __PHYSFS_platformCalcPrefDir */
-
-
-int __PHYSFS_platformSetDefaultAllocator(PHYSFS_Allocator *a)
-{
-    return 0;  /* just use malloc() and friends. */
-} /* __PHYSFS_platformSetDefaultAllocator */
-
-#endif /* PHYSFS_PLATFORM_UNIX */
-
-/* end of unix.c ... */
-