platform/posix.c
author Ryan C. Gordon <icculus@icculus.org>
Sun, 30 Mar 2003 20:46:45 +0000
changeset 558 a62e8e26dfc9
parent 504 3420d82f9b01
child 596 381b6ca0dd85
permissions -rw-r--r--
Minor strcasecmp optimization.
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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 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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#if HAVE_CONFIG_H
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#  include <config.h>
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#endif
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#if (!defined WIN32)
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#if (defined __STRICT_ANSI__)
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#define __PHYSFS_DOING_STRICT_ANSI__
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#endif
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/*
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 * We cheat a little: I want the symlink version of stat() (lstat), and
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 *  GCC/Linux will not declare it if compiled with the -ansi flag.
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 *  If you are really lacking symlink support on your platform,
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 *  you should #define __PHYSFS_NO_SYMLINKS__ before compiling this
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 *  file. That will open a security hole, though, if you really DO have
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 *  symlinks on your platform; it renders PHYSFS_permitSymbolicLinks(0)
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 *  useless, since every symlink will be reported as a regular file/dir.
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 */
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#if (defined __PHYSFS_DOING_STRICT_ANSI__)
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#undef __STRICT_ANSI__
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#endif
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#include <stdio.h>
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#if (defined __PHYSFS_DOING_STRICT_ANSI__)
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#define __STRICT_ANSI__
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#endif
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#include <stdlib.h>
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#include <string.h>
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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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#ifdef PHYSFS_HAVE_LLSEEK
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#include <linux/unistd.h>
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#endif
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#define __PHYSICSFS_INTERNAL__
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#include "physfs_internal.h"
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char *__PHYSFS_platformCopyEnvironmentVariable(const char *varname)
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{
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    const char *envr = getenv(varname);
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    char *retval = NULL;
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    if (envr != NULL)
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    {
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        retval = (char *) malloc(strlen(envr) + 1);
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        if (retval != NULL)
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            strcpy(retval, envr);
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    } /* if */
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    return(retval);
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} /* __PHYSFS_platformCopyEnvironmentVariable */
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static char *getUserNameByUID(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_name != NULL))
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    {
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        retval = (char *) malloc(strlen(pw->pw_name) + 1);
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        if (retval != NULL)
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            strcpy(retval, pw->pw_name);
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    } /* if */
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    return(retval);
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} /* getUserNameByUID */
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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))
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    {
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        retval = (char *) malloc(strlen(pw->pw_dir) + 1);
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        if (retval != NULL)
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            strcpy(retval, pw->pw_dir);
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    } /* if */
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    return(retval);
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} /* getUserDirByUID */
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char *__PHYSFS_platformGetUserName(void)
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{
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    char *retval = getUserNameByUID();
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    if (retval == NULL)
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        retval = __PHYSFS_platformCopyEnvironmentVariable("USER");
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    return(retval);
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} /* __PHYSFS_platformGetUserName */
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char *__PHYSFS_platformGetUserDir(void)
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{
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    char *retval = __PHYSFS_platformCopyEnvironmentVariable("HOME");
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    if (retval == NULL)
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        retval = getUserDirByUID();
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    return(retval);
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} /* __PHYSFS_platformGetUserDir */
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/* -ansi and -pedantic flags prevent use of strcasecmp() on Linux. */
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int __PHYSFS_platformStricmp(const char *x, const char *y)
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{
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    int ux, uy;
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    do
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    {
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        ux = toupper((int) *x);
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        uy = toupper((int) *y);
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        if (ux != uy)
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            return((ux > uy) ? 1 : -1);
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        x++;
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        y++;
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    } while ((ux) && (uy));
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    return(0);
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} /* __PHYSFS_platformStricmp */
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#if (defined __PHYSFS_NO_SYMLINKS__)
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#define doStat stat
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#else
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#define doStat lstat
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#endif
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int __PHYSFS_platformExists(const char *fname)
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{
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    struct stat statbuf;
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    BAIL_IF_MACRO(doStat(fname, &statbuf) == -1, strerror(errno), 0);
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    return(1);
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} /* __PHYSFS_platformExists */
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int __PHYSFS_platformIsSymLink(const char *fname)
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{
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#if (defined __PHYSFS_NO_SYMLINKS__)
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    return(0);
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#else
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    struct stat statbuf;
467
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    BAIL_IF_MACRO(lstat(fname, &statbuf) == -1, strerror(errno), 0);
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    return( (S_ISLNK(statbuf.st_mode)) ? 1 : 0 );
235
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#endif
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} /* __PHYSFS_platformIsSymlink */
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int __PHYSFS_platformIsDirectory(const char *fname)
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{
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    struct stat statbuf;
467
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    BAIL_IF_MACRO(stat(fname, &statbuf) == -1, strerror(errno), 0);
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    return( (S_ISDIR(statbuf.st_mode)) ? 1 : 0 );
235
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} /* __PHYSFS_platformIsDirectory */
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char *__PHYSFS_platformCvtToDependent(const char *prepend,
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                                      const char *dirName,
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                                      const char *append)
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{
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    int len = ((prepend) ? strlen(prepend) : 0) +
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              ((append) ? strlen(append) : 0) +
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              strlen(dirName) + 1;
249
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    char *retval = (char *) malloc(len);
235
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    BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
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    /* platform-independent notation is Unix-style already.  :)  */
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   191
    if (prepend)
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   192
        strcpy(retval, prepend);
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    else
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        retval[0] = '\0';
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    strcat(retval, dirName);
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   198
    if (append)
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   199
        strcat(retval, append);
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    return(retval);
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} /* __PHYSFS_platformCvtToDependent */
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LinkedStringList *__PHYSFS_platformEnumerateFiles(const char *dirname,
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                                                  int omitSymLinks)
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{
362
ac8c846a0a66 Changed enumeration code to use __PHYSFS_addToLinkedStringList().
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   209
    LinkedStringList *retval = NULL, *p = NULL;
235
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    DIR *dir;
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    struct dirent *ent;
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    int bufsize = 0;
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    char *buf = NULL;
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    int dlen = 0;
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   216
    if (omitSymLinks)
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   217
    {
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        dlen = strlen(dirname);
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        bufsize = dlen + 256;
249
fed886543e40 Added a bunch of explicit casts when using malloc().
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   220
        buf = (char *) malloc(bufsize);
235
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   221
        BAIL_IF_MACRO(buf == NULL, ERR_OUT_OF_MEMORY, NULL);
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        strcpy(buf, dirname);
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   223
        if (buf[dlen - 1] != '/')
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   224
        {
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   225
            buf[dlen++] = '/';
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   226
            buf[dlen] = '\0';
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   227
        } /* if */
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   228
    } /* if */
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   230
    errno = 0;
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   231
    dir = opendir(dirname);
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   232
    if (dir == NULL)
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   233
    {
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   234
        if (buf != NULL)
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   235
            free(buf);
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   236
        BAIL_IF_MACRO(1, strerror(errno), NULL);
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diff changeset
   237
    } /* if */
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   238
362
ac8c846a0a66 Changed enumeration code to use __PHYSFS_addToLinkedStringList().
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   239
    while ((ent = readdir(dir)) != NULL)
235
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   240
    {
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   241
        if (strcmp(ent->d_name, ".") == 0)
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   242
            continue;
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   243
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   244
        if (strcmp(ent->d_name, "..") == 0)
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   245
            continue;
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   246
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   247
        if (omitSymLinks)
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diff changeset
   248
        {
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   249
            char *p;
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   250
            int len = strlen(ent->d_name) + dlen + 1;
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parents:
diff changeset
   251
            if (len > bufsize)
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parents:
diff changeset
   252
            {
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   253
                p = realloc(buf, len);
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diff changeset
   254
                if (p == NULL)
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   255
                    continue;
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Ryan C. Gordon <icculus@icculus.org>
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   256
                buf = p;
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Ryan C. Gordon <icculus@icculus.org>
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   257
                bufsize = len;
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Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   258
            } /* if */
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   259
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   260
            strcpy(buf + dlen, ent->d_name);
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Ryan C. Gordon <icculus@icculus.org>
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   261
            if (__PHYSFS_platformIsSymLink(buf))
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Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   262
                continue;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   263
        } /* if */
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Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   264
362
ac8c846a0a66 Changed enumeration code to use __PHYSFS_addToLinkedStringList().
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   265
        retval = __PHYSFS_addToLinkedStringList(retval, &p, ent->d_name, -1);
235
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   266
    } /* while */
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   267
4ad12914f652 Initial add.
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   268
    if (buf != NULL)
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   269
        free(buf);
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   270
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Ryan C. Gordon <icculus@icculus.org>
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   271
    closedir(dir);
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Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   272
    return(retval);
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Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   273
} /* __PHYSFS_platformEnumerateFiles */
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diff changeset
   274
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diff changeset
   275
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Ryan C. Gordon <icculus@icculus.org>
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   276
char *__PHYSFS_platformCurrentDir(void)
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diff changeset
   277
{
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Ryan C. Gordon <icculus@icculus.org>
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   278
    int allocSize = 0;
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diff changeset
   279
    char *retval = NULL;
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Ryan C. Gordon <icculus@icculus.org>
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   280
    char *ptr;
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   281
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Ryan C. Gordon <icculus@icculus.org>
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   282
    do
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diff changeset
   283
    {
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Ryan C. Gordon <icculus@icculus.org>
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   284
        allocSize += 100;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   285
        ptr = (char *) realloc(retval, allocSize);
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   286
        if (ptr == NULL)
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   287
        {
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   288
            if (retval != NULL)
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   289
                free(retval);
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   290
            BAIL_MACRO(ERR_OUT_OF_MEMORY, NULL);
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   291
        } /* if */
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   292
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
   293
        retval = ptr;
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   294
        ptr = getcwd(retval, allocSize);
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   295
    } while (ptr == NULL && errno == ERANGE);
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   296
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   297
    if (ptr == NULL && errno)
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   298
    {
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   299
            /*
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   300
             * getcwd() failed for some reason, for example current
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   301
             * directory not existing.
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   302
             */
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   303
        if (retval != NULL)
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   304
            free(retval);
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   305
        BAIL_MACRO(ERR_NO_SUCH_FILE, NULL);
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   306
    } /* if */
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   307
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   308
    return(retval);
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   309
} /* __PHYSFS_platformCurrentDir */
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parents:
diff changeset
   310
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   311
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   312
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   313
int __PHYSFS_platformMkDir(const char *path)
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parents:
diff changeset
   314
{
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   315
    int rc;
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   316
    errno = 0;
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   317
    rc = mkdir(path, S_IRWXU);
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   318
    BAIL_IF_MACRO(rc == -1, strerror(errno), 0);
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   319
    return(1);
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   320
} /* __PHYSFS_platformMkDir */
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   321
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   322
251
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   323
static void *doOpen(const char *filename, int mode)
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   324
{
251
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   325
    int fd;
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   326
    int *retval;
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   327
    errno = 0;
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   328
251
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   329
    fd = open(filename, mode, S_IRUSR | S_IWUSR);
292
99bf6ef5639a Patched a bug where doOpen() reported success when the file couldn't be
Ryan C. Gordon <icculus@icculus.org>
parents: 259
diff changeset
   330
    BAIL_IF_MACRO(fd < 0, strerror(errno), NULL);
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   331
251
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   332
    retval = (int *) malloc(sizeof (int));
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   333
    if (retval == NULL)
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   334
    {
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   335
        close(fd);
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   336
        BAIL_MACRO(ERR_OUT_OF_MEMORY, NULL);
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   337
    } /* if */
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   338
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   339
    *retval = fd;
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   340
    return((void *) retval);
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   341
} /* doOpen */
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   342
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   343
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   344
void *__PHYSFS_platformOpenRead(const char *filename)
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   345
{
251
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   346
    return(doOpen(filename, O_RDONLY));
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   347
} /* __PHYSFS_platformOpenRead */
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   348
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   349
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   350
void *__PHYSFS_platformOpenWrite(const char *filename)
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   351
{
251
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   352
    return(doOpen(filename, O_WRONLY | O_CREAT | O_TRUNC));
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   353
} /* __PHYSFS_platformOpenWrite */
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   354
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   355
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   356
void *__PHYSFS_platformOpenAppend(const char *filename)
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   357
{
251
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   358
    return(doOpen(filename, O_WRONLY | O_CREAT | O_APPEND));
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   359
} /* __PHYSFS_platformOpenAppend */
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   360
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   361
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   362
PHYSFS_sint64 __PHYSFS_platformRead(void *opaque, void *buffer,
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   363
                                    PHYSFS_uint32 size, PHYSFS_uint32 count)
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   364
{
251
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   365
    int fd = *((int *) opaque);
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   366
    int max = size * count;
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   367
    int rc = read(fd, buffer, max);
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   368
251
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   369
    BAIL_IF_MACRO(rc == -1, strerror(errno), rc);
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   370
    assert(rc <= max);
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   371
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   372
    if ((rc < max) && (size > 1))
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   373
        lseek(fd, -(rc % size), SEEK_CUR); /* rollback to object boundary. */
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   374
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   375
    return(rc / size);
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   376
} /* __PHYSFS_platformRead */
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   377
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   378
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   379
PHYSFS_sint64 __PHYSFS_platformWrite(void *opaque, const void *buffer,
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   380
                                     PHYSFS_uint32 size, PHYSFS_uint32 count)
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   381
{
251
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   382
    int fd = *((int *) opaque);
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   383
    int max = size * count;
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   384
    int rc = write(fd, (void *) buffer, max);
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   385
251
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   386
    BAIL_IF_MACRO(rc == -1, strerror(errno), rc);
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   387
    assert(rc <= max);
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   388
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   389
    if ((rc < max) && (size > 1))
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   390
        lseek(fd, -(rc % size), SEEK_CUR); /* rollback to object boundary. */
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   391
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   392
    return(rc / size);
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   393
} /* __PHYSFS_platformWrite */
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   394
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   395
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   396
int __PHYSFS_platformSeek(void *opaque, PHYSFS_uint64 pos)
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   397
{
251
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   398
    int fd = *((int *) opaque);
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   399
259
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   400
    #ifdef PHYSFS_HAVE_LLSEEK
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   401
      unsigned long offset_high = ((pos >> 32) & 0xFFFFFFFF);
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   402
      unsigned long offset_low = (pos & 0xFFFFFFFF);
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   403
      loff_t retoffset;
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   404
      int rc = llseek(fd, offset_high, offset_low, &retoffset, SEEK_SET);
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   405
      BAIL_IF_MACRO(rc == -1, strerror(errno), 0);
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   406
    #else
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   407
      BAIL_IF_MACRO(lseek(fd, (int) pos, SEEK_SET) == -1, strerror(errno), 0);
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   408
    #endif
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   409
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   410
    return(1);
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   411
} /* __PHYSFS_platformSeek */
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   412
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   413
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   414
PHYSFS_sint64 __PHYSFS_platformTell(void *opaque)
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   415
{
251
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   416
    int fd = *((int *) opaque);
259
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   417
    PHYSFS_sint64 retval;
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   418
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   419
    #ifdef PHYSFS_HAVE_LLSEEK
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   420
      loff_t retoffset;
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   421
      int rc = llseek(fd, 0, &retoffset, SEEK_CUR);
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   422
      BAIL_IF_MACRO(rc == -1, strerror(errno), -1);
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   423
      retval = (PHYSFS_sint64) retoffset;
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   424
    #else
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   425
      retval = (PHYSFS_sint64) lseek(fd, 0, SEEK_CUR);
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   426
      BAIL_IF_MACRO(retval == -1, strerror(errno), -1);
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   427
    #endif
bd65a0d74e9a 64-bit _llseek() support for the future.
Ryan C. Gordon <icculus@icculus.org>
parents: 255
diff changeset
   428
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   429
    return(retval);
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   430
} /* __PHYSFS_platformTell */
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   431
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   432
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   433
PHYSFS_sint64 __PHYSFS_platformFileLength(void *opaque)
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   434
{
251
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   435
    int fd = *((int *) opaque);
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   436
    struct stat statbuf;
251
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   437
    BAIL_IF_MACRO(fstat(fd, &statbuf) == -1, strerror(errno), -1);
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   438
    return((PHYSFS_sint64) statbuf.st_size);
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   439
} /* __PHYSFS_platformFileLength */
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   440
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   441
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   442
int __PHYSFS_platformEOF(void *opaque)
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   443
{
251
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   444
    PHYSFS_sint64 pos = __PHYSFS_platformTell(opaque);
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   445
    PHYSFS_sint64 len = __PHYSFS_platformFileLength(opaque);
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   446
    return(pos >= len);
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   447
} /* __PHYSFS_platformEOF */
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   448
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   449
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   450
int __PHYSFS_platformFlush(void *opaque)
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   451
{
251
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   452
    int fd = *((int *) opaque);
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   453
    BAIL_IF_MACRO(fsync(fd) == -1, strerror(errno), 0);
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   454
    return(1);
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   455
} /* __PHYSFS_platformFlush */
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   456
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   457
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   458
int __PHYSFS_platformClose(void *opaque)
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   459
{
251
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   460
    int fd = *((int *) opaque);
0f4615263e32 Actual POSIX calls to replace ANSI stdio routines.
Ryan C. Gordon <icculus@icculus.org>
parents: 249
diff changeset
   461
    BAIL_IF_MACRO(close(fd) == -1, strerror(errno), 0);
429
72ca216c756a Patched memory leaks (thanks, Valgrind!)
Ryan C. Gordon <icculus@icculus.org>
parents: 362
diff changeset
   462
    free(opaque);
235
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   463
    return(1);
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   464
} /* __PHYSFS_platformClose */
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   465
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   466
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   467
int __PHYSFS_platformDelete(const char *path)
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   468
{
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   469
    BAIL_IF_MACRO(remove(path) == -1, strerror(errno), 0);
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   470
    return(1);
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   471
} /* __PHYSFS_platformDelete */
4ad12914f652 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   472
240
052041af9001 Added PHYSFS_getLastModTime() API. (Thanks, John Hall!)
Ryan C. Gordon <icculus@icculus.org>
parents: 235
diff changeset
   473
052041af9001 Added PHYSFS_getLastModTime() API. (Thanks, John Hall!)
Ryan C. Gordon <icculus@icculus.org>
parents: 235
diff changeset
   474
PHYSFS_sint64 __PHYSFS_platformGetLastModTime(const char *fname)
052041af9001 Added PHYSFS_getLastModTime() API. (Thanks, John Hall!)
Ryan C. Gordon <icculus@icculus.org>
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{
052041af9001 Added PHYSFS_getLastModTime() API. (Thanks, John Hall!)
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    struct stat statbuf;
052041af9001 Added PHYSFS_getLastModTime() API. (Thanks, John Hall!)
Ryan C. Gordon <icculus@icculus.org>
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   477
    BAIL_IF_MACRO(stat(fname, &statbuf) < 0, strerror(errno), -1);
052041af9001 Added PHYSFS_getLastModTime() API. (Thanks, John Hall!)
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   478
    return statbuf.st_mtime;
052041af9001 Added PHYSFS_getLastModTime() API. (Thanks, John Hall!)
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   479
} /* __PHYSFS_platformGetLastModTime */
052041af9001 Added PHYSFS_getLastModTime() API. (Thanks, John Hall!)
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310
f8bca4a93fd5 Patched to compile on Cygwin.
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   481
#endif /* !defined WIN32 */
f8bca4a93fd5 Patched to compile on Cygwin.
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235
4ad12914f652 Initial add.
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   483
/* end of posix.c ... */
4ad12914f652 Initial add.
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   484