src/platform_posix.c
author Ryan C. Gordon <icculus@icculus.org>
Fri, 30 Nov 2012 12:43:56 -0500
changeset 1327 998351d485d9
parent 1324 d12c1c033a7d
child 1335 1b9a72908ece
permissions -rw-r--r--
Cleaned out the "exists" nonsense in the stat() API.
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/*
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 * Posix-esque support routines for PhysicsFS.
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 *
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 * Please see the file LICENSE.txt in the source's root directory.
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 *
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 *  This file written by Ryan C. Gordon.
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 */
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/* !!! FIXME: check for EINTR? */
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#define __PHYSICSFS_INTERNAL__
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#include "physfs_platforms.h"
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#ifdef PHYSFS_PLATFORM_POSIX
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#include <unistd.h>
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#include <ctype.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <pwd.h>
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#include <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#if ((!defined PHYSFS_NO_THREAD_SUPPORT) && (!defined PHYSFS_PLATFORM_BEOS))
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#include <pthread.h>
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#endif
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#include "physfs_internal.h"
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static PHYSFS_ErrorCode errcodeFromErrnoError(const int err)
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{
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    switch (err)
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    {
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        case 0: return PHYSFS_ERR_OK;
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        case EACCES: return PHYSFS_ERR_PERMISSION;
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        case EPERM: return PHYSFS_ERR_PERMISSION;
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        case EDQUOT: return PHYSFS_ERR_NO_SPACE;
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        case EIO: return PHYSFS_ERR_IO;
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        case ELOOP: return PHYSFS_ERR_SYMLINK_LOOP;
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        case EMLINK: return PHYSFS_ERR_NO_SPACE;
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        case ENAMETOOLONG: return PHYSFS_ERR_BAD_FILENAME;
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        case ENOENT: return PHYSFS_ERR_NOT_FOUND;
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        case ENOSPC: return PHYSFS_ERR_NO_SPACE;
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        case ENOTDIR: return PHYSFS_ERR_NOT_FOUND;
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        case EISDIR: return PHYSFS_ERR_NOT_A_FILE;
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        case EROFS: return PHYSFS_ERR_READ_ONLY;
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        case ETXTBSY: return PHYSFS_ERR_BUSY;
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        case EBUSY: return PHYSFS_ERR_BUSY;
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        case ENOMEM: return PHYSFS_ERR_OUT_OF_MEMORY;
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        case ENOTEMPTY: return PHYSFS_ERR_DIR_NOT_EMPTY;
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        default: return PHYSFS_ERR_OS_ERROR;
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    } /* switch */
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} /* errcodeFromErrnoError */
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static inline PHYSFS_ErrorCode errcodeFromErrno(void)
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{
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    return errcodeFromErrnoError(errno);
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} /* errcodeFromErrno */
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static char *getUserDirByUID(void)
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{
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    uid_t uid = getuid();
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    struct passwd *pw;
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    char *retval = NULL;
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    pw = getpwuid(uid);
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    if ((pw != NULL) && (pw->pw_dir != NULL) && (*pw->pw_dir != '\0'))
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    {
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        const size_t dlen = strlen(pw->pw_dir);
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        const size_t add_dirsep = (pw->pw_dir[dlen-1] != '/') ? 1 : 0;
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        retval = (char *) allocator.Malloc(dlen + 1 + add_dirsep);
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        if (retval != NULL)
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        {
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            strcpy(retval, pw->pw_dir);
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            if (add_dirsep)
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            {
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                retval[dlen] = '/';
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                retval[dlen+1] = '\0';
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            } /* if */
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        } /* if */
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    } /* if */
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    return retval;
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} /* getUserDirByUID */
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char *__PHYSFS_platformCalcUserDir(void)
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{
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    char *retval = NULL;
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    char *envr = getenv("HOME");
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    /* if the environment variable was set, make sure it's really a dir. */
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    if (envr != NULL)
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    {
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        struct stat statbuf;
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        if ((stat(envr, &statbuf) != -1) && (S_ISDIR(statbuf.st_mode)))
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        {
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            const size_t envrlen = strlen(envr);
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            const size_t add_dirsep = (envr[envrlen-1] != '/') ? 1 : 0;
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            retval = allocator.Malloc(envrlen + 1 + add_dirsep);
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            if (retval)
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            {
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                strcpy(retval, envr);
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                if (add_dirsep)
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                {
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                    retval[envrlen] = '/';
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                    retval[envrlen+1] = '\0';
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                } /* if */
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            } /* if */
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        } /* if */
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    } /* if */
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    if (retval == NULL)
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        retval = getUserDirByUID();
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    return retval;
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} /* __PHYSFS_platformCalcUserDir */
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void __PHYSFS_platformEnumerateFiles(const char *dirname,
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                                     PHYSFS_EnumFilesCallback callback,
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                                     const char *origdir,
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                                     void *callbackdata)
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{
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    DIR *dir;
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    struct dirent *ent;
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    char *buf = NULL;
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    errno = 0;
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    dir = opendir(dirname);
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    if (dir == NULL)
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    {
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        allocator.Free(buf);
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        return;
235
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    } /* if */
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ac8c846a0a66 Changed enumeration code to use __PHYSFS_addToLinkedStringList().
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   141
    while ((ent = readdir(dir)) != NULL)
235
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    {
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        if (strcmp(ent->d_name, ".") == 0)
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            continue;
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        else if (strcmp(ent->d_name, "..") == 0)
235
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            continue;
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        callback(callbackdata, origdir, ent->d_name);
235
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    } /* while */
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    allocator.Free(buf);
235
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    closedir(dir);
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} /* __PHYSFS_platformEnumerateFiles */
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int __PHYSFS_platformMkDir(const char *path)
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{
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    const int rc = mkdir(path, S_IRWXU);
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    BAIL_IF_MACRO(rc == -1, errcodeFromErrno(), 0);
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    return 1;
235
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} /* __PHYSFS_platformMkDir */
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251
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static void *doOpen(const char *filename, int mode)
235
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{
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    const int appending = (mode & O_APPEND);
251
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    int fd;
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   168
    int *retval;
235
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    errno = 0;
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   171
    /* O_APPEND doesn't actually behave as we'd like. */
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    mode &= ~O_APPEND;
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   173
251
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    fd = open(filename, mode, S_IRUSR | S_IWUSR);
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    BAIL_IF_MACRO(fd < 0, errcodeFromErrno(), NULL);
235
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    if (appending)
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    {
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        if (lseek(fd, 0, SEEK_END) < 0)
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        {
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            const int err = errno;
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            close(fd);
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            BAIL_MACRO(errcodeFromErrnoError(err), NULL);
939
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   184
        } /* if */
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   185
    } /* if */
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   186
691
71d9affe0d8a All memory management now goes through allocation hooks instead of directly to
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    retval = (int *) allocator.Malloc(sizeof (int));
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   188
    if (!retval)
251
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diff changeset
   189
    {
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   190
        close(fd);
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   191
        BAIL_MACRO(PHYSFS_ERR_OUT_OF_MEMORY, NULL);
251
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diff changeset
   192
    } /* if */
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   193
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   194
    *retval = fd;
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   195
    return ((void *) retval);
235
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   196
} /* doOpen */
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   199
void *__PHYSFS_platformOpenRead(const char *filename)
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{
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    return doOpen(filename, O_RDONLY);
235
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   202
} /* __PHYSFS_platformOpenRead */
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   205
void *__PHYSFS_platformOpenWrite(const char *filename)
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{
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   207
    return doOpen(filename, O_WRONLY | O_CREAT | O_TRUNC);
235
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   208
} /* __PHYSFS_platformOpenWrite */
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   211
void *__PHYSFS_platformOpenAppend(const char *filename)
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{
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    return doOpen(filename, O_WRONLY | O_CREAT | O_APPEND);
235
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   214
} /* __PHYSFS_platformOpenAppend */
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   216
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   217
PHYSFS_sint64 __PHYSFS_platformRead(void *opaque, void *buffer,
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                                    PHYSFS_uint64 len)
235
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{
1117
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   220
    const int fd = *((int *) opaque);
1098
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   221
    ssize_t rc = 0;
4e86cec1143f Moved all the file i/o from stdio-style to POSIX-style.
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   222
1240
22d4d1bd4e21 Reworked the error reporting API. Now we use error codes instead of strings.
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   223
    if (!__PHYSFS_ui64FitsAddressSpace(len))
22d4d1bd4e21 Reworked the error reporting API. Now we use error codes instead of strings.
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   224
        BAIL_MACRO(PHYSFS_ERR_INVALID_ARGUMENT, -1);
235
4ad12914f652 Initial add.
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   225
1098
4e86cec1143f Moved all the file i/o from stdio-style to POSIX-style.
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   226
    rc = read(fd, buffer, (size_t) len);
1240
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   227
    BAIL_IF_MACRO(rc == -1, errcodeFromErrno(), -1);
1098
4e86cec1143f Moved all the file i/o from stdio-style to POSIX-style.
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   228
    assert(rc >= 0);
4e86cec1143f Moved all the file i/o from stdio-style to POSIX-style.
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   229
    assert(rc <= len);
4e86cec1143f Moved all the file i/o from stdio-style to POSIX-style.
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   230
    return (PHYSFS_sint64) rc;
235
4ad12914f652 Initial add.
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   231
} /* __PHYSFS_platformRead */
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   232
4ad12914f652 Initial add.
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   233
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   234
PHYSFS_sint64 __PHYSFS_platformWrite(void *opaque, const void *buffer,
1098
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   235
                                     PHYSFS_uint64 len)
235
4ad12914f652 Initial add.
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diff changeset
   236
{
1117
968e1567f4f4 Constification.
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   237
    const int fd = *((int *) opaque);
1098
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   238
    ssize_t rc = 0;
235
4ad12914f652 Initial add.
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   239
1240
22d4d1bd4e21 Reworked the error reporting API. Now we use error codes instead of strings.
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   240
    if (!__PHYSFS_ui64FitsAddressSpace(len))
22d4d1bd4e21 Reworked the error reporting API. Now we use error codes instead of strings.
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   241
        BAIL_MACRO(PHYSFS_ERR_INVALID_ARGUMENT, -1);
1098
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   242
4e86cec1143f Moved all the file i/o from stdio-style to POSIX-style.
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   243
    rc = write(fd, (void *) buffer, (size_t) len);
1240
22d4d1bd4e21 Reworked the error reporting API. Now we use error codes instead of strings.
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   244
    BAIL_IF_MACRO(rc == -1, errcodeFromErrno(), rc);
1098
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   245
    assert(rc >= 0);
4e86cec1143f Moved all the file i/o from stdio-style to POSIX-style.
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   246
    assert(rc <= len);
4e86cec1143f Moved all the file i/o from stdio-style to POSIX-style.
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   247
    return (PHYSFS_sint64) rc;
235
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   248
} /* __PHYSFS_platformWrite */
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   249
4ad12914f652 Initial add.
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   250
4ad12914f652 Initial add.
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   251
int __PHYSFS_platformSeek(void *opaque, PHYSFS_uint64 pos)
4ad12914f652 Initial add.
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   252
{
1117
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   253
    const int fd = *((int *) opaque);
1240
22d4d1bd4e21 Reworked the error reporting API. Now we use error codes instead of strings.
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   254
    const int rc = lseek(fd, (off_t) pos, SEEK_SET);
22d4d1bd4e21 Reworked the error reporting API. Now we use error codes instead of strings.
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   255
    BAIL_IF_MACRO(rc == -1, errcodeFromErrno(), 0);
1016
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   256
    return 1;
235
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   257
} /* __PHYSFS_platformSeek */
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   258
4ad12914f652 Initial add.
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   259
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   260
PHYSFS_sint64 __PHYSFS_platformTell(void *opaque)
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   261
{
1117
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   262
    const int fd = *((int *) opaque);
259
bd65a0d74e9a 64-bit _llseek() support for the future.
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   263
    PHYSFS_sint64 retval;
1228
7c0e9de2ba33 Removed llseek().
Ryan C. Gordon <icculus@icculus.org>
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   264
    retval = (PHYSFS_sint64) lseek(fd, 0, SEEK_CUR);
1240
22d4d1bd4e21 Reworked the error reporting API. Now we use error codes instead of strings.
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   265
    BAIL_IF_MACRO(retval == -1, errcodeFromErrno(), -1);
1016
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   266
    return retval;
235
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   267
} /* __PHYSFS_platformTell */
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PHYSFS_sint64 __PHYSFS_platformFileLength(void *opaque)
4ad12914f652 Initial add.
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   271
{
1117
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   272
    const int fd = *((int *) opaque);
235
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    struct stat statbuf;
1240
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   274
    BAIL_IF_MACRO(fstat(fd, &statbuf) == -1, errcodeFromErrno(), -1);
1016
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   275
    return ((PHYSFS_sint64) statbuf.st_size);
235
4ad12914f652 Initial add.
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parents:
diff changeset
   276
} /* __PHYSFS_platformFileLength */
4ad12914f652 Initial add.
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parents:
diff changeset
   277
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   278
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   279
int __PHYSFS_platformFlush(void *opaque)
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   280
{
1117
968e1567f4f4 Constification.
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   281
    const int fd = *((int *) opaque);
1240
22d4d1bd4e21 Reworked the error reporting API. Now we use error codes instead of strings.
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   282
    BAIL_IF_MACRO(fsync(fd) == -1, errcodeFromErrno(), 0);
1016
957c97389257 Cleaned up returns that look like function calls for my updated coding style.
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   283
    return 1;
235
4ad12914f652 Initial add.
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diff changeset
   284
} /* __PHYSFS_platformFlush */
4ad12914f652 Initial add.
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diff changeset
   285
4ad12914f652 Initial add.
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diff changeset
   286
1118
2e09fc635fdd Abstracted file i/o into PHYSFS_Io interface.
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diff changeset
   287
void __PHYSFS_platformClose(void *opaque)
235
4ad12914f652 Initial add.
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parents:
diff changeset
   288
{
1118
2e09fc635fdd Abstracted file i/o into PHYSFS_Io interface.
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   289
    const int fd = *((int *) opaque);
2e09fc635fdd Abstracted file i/o into PHYSFS_Io interface.
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   290
    (void) close(fd);  /* we don't check this. You should have used flush! */
691
71d9affe0d8a All memory management now goes through allocation hooks instead of directly to
Ryan C. Gordon <icculus@icculus.org>
parents: 657
diff changeset
   291
    allocator.Free(opaque);
235
4ad12914f652 Initial add.
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   292
} /* __PHYSFS_platformClose */
4ad12914f652 Initial add.
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   293
4ad12914f652 Initial add.
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diff changeset
   294
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
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   295
int __PHYSFS_platformDelete(const char *path)
4ad12914f652 Initial add.
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parents:
diff changeset
   296
{
1240
22d4d1bd4e21 Reworked the error reporting API. Now we use error codes instead of strings.
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   297
    BAIL_IF_MACRO(remove(path) == -1, errcodeFromErrno(), 0);
1016
957c97389257 Cleaned up returns that look like function calls for my updated coding style.
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diff changeset
   298
    return 1;
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   299
} /* __PHYSFS_platformDelete */
4ad12914f652 Initial add.
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   300
240
052041af9001 Added PHYSFS_getLastModTime() API. (Thanks, John Hall!)
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   301
1327
998351d485d9 Cleaned out the "exists" nonsense in the stat() API.
Ryan C. Gordon <icculus@icculus.org>
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   302
int __PHYSFS_platformStat(const char *filename, PHYSFS_Stat *st)
1054
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
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diff changeset
   303
{
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
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   304
    struct stat statbuf;
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
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   305
1327
998351d485d9 Cleaned out the "exists" nonsense in the stat() API.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   306
    BAIL_IF_MACRO(lstat(filename, &statbuf) == -1, errcodeFromErrno(), 0);
1167
9d84f8652839 POSIX version of __PHYSFS_platformStat() forgot to set *exists properly.
Ryan C. Gordon <icculus@icculus.org>
parents: 1129
diff changeset
   307
1054
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
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   308
    if (S_ISREG(statbuf.st_mode))
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
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parents: 1053
diff changeset
   309
    {
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
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   310
        st->filetype = PHYSFS_FILETYPE_REGULAR;
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
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   311
        st->filesize = statbuf.st_size;
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
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parents: 1053
diff changeset
   312
    } /* if */
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
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   313
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
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   314
    else if(S_ISDIR(statbuf.st_mode))
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
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parents: 1053
diff changeset
   315
    {
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
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   316
        st->filetype = PHYSFS_FILETYPE_DIRECTORY;
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   317
        st->filesize = 0;
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
Ryan C. Gordon <icculus@icculus.org>
parents: 1053
diff changeset
   318
    } /* else if */
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
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diff changeset
   319
1323
61ca5d6011df POSIX version of __PHYSFS_platformStat() now reports symlinks correctly.
Ryan C. Gordon <icculus@icculus.org>
parents: 1322
diff changeset
   320
    else if(S_ISLNK(statbuf.st_mode))
61ca5d6011df POSIX version of __PHYSFS_platformStat() now reports symlinks correctly.
Ryan C. Gordon <icculus@icculus.org>
parents: 1322
diff changeset
   321
    {
61ca5d6011df POSIX version of __PHYSFS_platformStat() now reports symlinks correctly.
Ryan C. Gordon <icculus@icculus.org>
parents: 1322
diff changeset
   322
        st->filetype = PHYSFS_FILETYPE_SYMLINK;
61ca5d6011df POSIX version of __PHYSFS_platformStat() now reports symlinks correctly.
Ryan C. Gordon <icculus@icculus.org>
parents: 1322
diff changeset
   323
        st->filesize = 0;
61ca5d6011df POSIX version of __PHYSFS_platformStat() now reports symlinks correctly.
Ryan C. Gordon <icculus@icculus.org>
parents: 1322
diff changeset
   324
    } /* else if */
61ca5d6011df POSIX version of __PHYSFS_platformStat() now reports symlinks correctly.
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parents: 1322
diff changeset
   325
1054
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   326
    else
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
Ryan C. Gordon <icculus@icculus.org>
parents: 1053
diff changeset
   327
    {
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
Ryan C. Gordon <icculus@icculus.org>
parents: 1053
diff changeset
   328
        st->filetype = PHYSFS_FILETYPE_OTHER;
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
Ryan C. Gordon <icculus@icculus.org>
parents: 1053
diff changeset
   329
        st->filesize = statbuf.st_size;
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
Ryan C. Gordon <icculus@icculus.org>
parents: 1053
diff changeset
   330
    } /* else */
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
Ryan C. Gordon <icculus@icculus.org>
parents: 1053
diff changeset
   331
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
Ryan C. Gordon <icculus@icculus.org>
parents: 1053
diff changeset
   332
    st->modtime = statbuf.st_mtime;
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
Ryan C. Gordon <icculus@icculus.org>
parents: 1053
diff changeset
   333
    st->createtime = statbuf.st_ctime;
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
Ryan C. Gordon <icculus@icculus.org>
parents: 1053
diff changeset
   334
    st->accesstime = statbuf.st_atime;
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
Ryan C. Gordon <icculus@icculus.org>
parents: 1053
diff changeset
   335
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
Ryan C. Gordon <icculus@icculus.org>
parents: 1053
diff changeset
   336
    /* !!! FIXME: maybe we should just report full permissions? */
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
Ryan C. Gordon <icculus@icculus.org>
parents: 1053
diff changeset
   337
    st->readonly = access(filename, W_OK);
1106
94c3669d0311 Fixed PHYSFS_stat()'s return value to match rest of PhysicsFS API.
Ryan C. Gordon <icculus@icculus.org>
parents: 1098
diff changeset
   338
    return 1;
1054
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
Ryan C. Gordon <icculus@icculus.org>
parents: 1053
diff changeset
   339
} /* __PHYSFS_platformStat */
57f4af811ffb THIS is Christoph's PHYSFS_stat() work.
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diff changeset
   340
1173
77b2df665bd1 Removed deprecated Mac OS X APIs.
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diff changeset
   341
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   342
#ifndef PHYSFS_PLATFORM_BEOS  /* BeOS has its own code in platform_beos.cpp */
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   343
#if (defined PHYSFS_NO_THREAD_SUPPORT)
77b2df665bd1 Removed deprecated Mac OS X APIs.
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   344
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
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   345
void *__PHYSFS_platformGetThreadID(void) { return ((void *) 0x0001); }
77b2df665bd1 Removed deprecated Mac OS X APIs.
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diff changeset
   346
void *__PHYSFS_platformCreateMutex(void) { return ((void *) 0x0001); }
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   347
void __PHYSFS_platformDestroyMutex(void *mutex) {}
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   348
int __PHYSFS_platformGrabMutex(void *mutex) { return 1; }
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   349
void __PHYSFS_platformReleaseMutex(void *mutex) {}
77b2df665bd1 Removed deprecated Mac OS X APIs.
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parents: 1167
diff changeset
   350
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   351
#else
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   352
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   353
typedef struct
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   354
{
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   355
    pthread_mutex_t mutex;
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   356
    pthread_t owner;
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   357
    PHYSFS_uint32 count;
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   358
} PthreadMutex;
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   359
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   360
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   361
void *__PHYSFS_platformGetThreadID(void)
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   362
{
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   363
    return ( (void *) ((size_t) pthread_self()) );
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   364
} /* __PHYSFS_platformGetThreadID */
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   365
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   366
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   367
void *__PHYSFS_platformCreateMutex(void)
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   368
{
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   369
    int rc;
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   370
    PthreadMutex *m = (PthreadMutex *) allocator.Malloc(sizeof (PthreadMutex));
1240
22d4d1bd4e21 Reworked the error reporting API. Now we use error codes instead of strings.
Ryan C. Gordon <icculus@icculus.org>
parents: 1238
diff changeset
   371
    BAIL_IF_MACRO(!m, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
1173
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   372
    rc = pthread_mutex_init(&m->mutex, NULL);
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   373
    if (rc != 0)
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   374
    {
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   375
        allocator.Free(m);
1240
22d4d1bd4e21 Reworked the error reporting API. Now we use error codes instead of strings.
Ryan C. Gordon <icculus@icculus.org>
parents: 1238
diff changeset
   376
        BAIL_MACRO(PHYSFS_ERR_OS_ERROR, NULL);
1173
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   377
    } /* if */
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   378
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   379
    m->count = 0;
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   380
    m->owner = (pthread_t) 0xDEADBEEF;
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   381
    return ((void *) m);
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   382
} /* __PHYSFS_platformCreateMutex */
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   383
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   384
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   385
void __PHYSFS_platformDestroyMutex(void *mutex)
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   386
{
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   387
    PthreadMutex *m = (PthreadMutex *) mutex;
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   388
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   389
    /* Destroying a locked mutex is a bug, but we'll try to be helpful. */
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   390
    if ((m->owner == pthread_self()) && (m->count > 0))
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   391
        pthread_mutex_unlock(&m->mutex);
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   392
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   393
    pthread_mutex_destroy(&m->mutex);
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   394
    allocator.Free(m);
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   395
} /* __PHYSFS_platformDestroyMutex */
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   396
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   397
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   398
int __PHYSFS_platformGrabMutex(void *mutex)
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   399
{
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   400
    PthreadMutex *m = (PthreadMutex *) mutex;
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   401
    pthread_t tid = pthread_self();
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   402
    if (m->owner != tid)
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   403
    {
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   404
        if (pthread_mutex_lock(&m->mutex) != 0)
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   405
            return 0;
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   406
        m->owner = tid;
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   407
    } /* if */
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   408
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   409
    m->count++;
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   410
    return 1;
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   411
} /* __PHYSFS_platformGrabMutex */
77b2df665bd1 Removed deprecated Mac OS X APIs.
Ryan C. Gordon <icculus@icculus.org>
parents: 1167
diff changeset
   412
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void __PHYSFS_platformReleaseMutex(void *mutex)
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{
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    PthreadMutex *m = (PthreadMutex *) mutex;
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    assert(m->owner == pthread_self());  /* catch programming errors. */
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    assert(m->count > 0);  /* catch programming errors. */
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    if (m->owner == pthread_self())
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    {
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        if (--m->count == 0)
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        {
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            m->owner = (pthread_t) 0xDEADBEEF;
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            pthread_mutex_unlock(&m->mutex);
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        } /* if */
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    } /* if */
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} /* __PHYSFS_platformReleaseMutex */
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#endif /* !PHYSFS_NO_THREAD_SUPPORT */
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#endif /* !PHYSFS_PLATFORM_BEOS */
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#endif  /* PHYSFS_PLATFORM_POSIX */
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/* end of posix.c ... */
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