/* Unix SMB/CIFS implementation. SMB client library implementation (Old interface compatibility) Copyright (C) Andrew Tridgell 1998 Copyright (C) Richard Sharpe 2000 Copyright (C) John Terpstra 2000 Copyright (C) Tom Jansen (Ninja ISD) 2002 Copyright (C) Derrell Lipman 2003, 2008 This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include "includes.h" #include "libsmb_internal.h" struct smbc_compat_fdlist { SMBCFILE * file; int fd; struct smbc_compat_fdlist *next, *prev; }; static SMBCCTX * statcont = NULL; static int smbc_compat_initialized = 0; static int smbc_compat_nextfd = 0; static struct smbc_compat_fdlist * smbc_compat_fd_in_use = NULL; static struct smbc_compat_fdlist * smbc_compat_fd_avail = NULL; /* Find an fd and return the SMBCFILE * or NULL on failure */ static SMBCFILE * find_fd(int fd) { struct smbc_compat_fdlist * f = smbc_compat_fd_in_use; while (f) { if (f->fd == fd) return f->file; f = f->next; } return NULL; } /* Add an fd, returns 0 on success, -1 on error with errno set */ static int add_fd(SMBCFILE * file) { struct smbc_compat_fdlist * f = smbc_compat_fd_avail; if (f) { /* We found one that's available */ DLIST_REMOVE(smbc_compat_fd_avail, f); } else { /* * None were available, so allocate one. Keep the number of * file descriptors determinate. This allows the application * to allocate bitmaps or mapping of file descriptors based on * a known maximum number of file descriptors that will ever * be returned. */ if (smbc_compat_nextfd >= FD_SETSIZE) { errno = EMFILE; return -1; } f = SMB_MALLOC_P(struct smbc_compat_fdlist); if (!f) { errno = ENOMEM; return -1; } f->fd = SMBC_BASE_FD + smbc_compat_nextfd++; } f->file = file; DLIST_ADD(smbc_compat_fd_in_use, f); return f->fd; } /* Delete an fd, returns 0 on success */ static int del_fd(int fd) { struct smbc_compat_fdlist * f = smbc_compat_fd_in_use; while (f) { if (f->fd == fd) break; f = f->next; } if (f) { /* found */ DLIST_REMOVE(smbc_compat_fd_in_use, f); f->file = NULL; DLIST_ADD(smbc_compat_fd_avail, f); return 0; } return 1; } int smbc_init(smbc_get_auth_data_fn fn, int debug) { if (!smbc_compat_initialized) { statcont = smbc_new_context(); if (!statcont) return -1; smbc_setDebug(statcont, debug); smbc_setFunctionAuthData(statcont, fn); if (!smbc_init_context(statcont)) { smbc_free_context(statcont, False); return -1; } smbc_compat_initialized = 1; return 0; } return 0; } SMBCCTX * smbc_set_context(SMBCCTX * context) { SMBCCTX *old_context = statcont; if (context) { /* Save provided context. It must have been initialized! */ statcont = context; /* You'd better know what you're doing. We won't help you. */ smbc_compat_initialized = 1; } return old_context; } int smbc_open(const char *furl, int flags, mode_t mode) { SMBCFILE * file; int fd; file = smbc_getFunctionOpen(statcont)(statcont, furl, flags, mode); if (!file) return -1; fd = add_fd(file); if (fd == -1) smbc_getFunctionClose(statcont)(statcont, file); return fd; } int smbc_creat(const char *furl, mode_t mode) { SMBCFILE * file; int fd; file = smbc_getFunctionCreat(statcont)(statcont, furl, mode); if (!file) return -1; fd = add_fd(file); if (fd == -1) { /* Hmm... should we delete the file too ? I guess we could try */ smbc_getFunctionClose(statcont)(statcont, file); smbc_getFunctionUnlink(statcont)(statcont, furl); } return fd; } ssize_t smbc_read(int fd, void *buf, size_t bufsize) { SMBCFILE * file = find_fd(fd); return smbc_getFunctionRead(statcont)(statcont, file, buf, bufsize); } ssize_t smbc_write(int fd, const void *buf, size_t bufsize) { SMBCFILE * file = find_fd(fd); return smbc_getFunctionWrite(statcont)(statcont, file, buf, bufsize); } off_t smbc_lseek(int fd, off_t offset, int whence) { SMBCFILE * file = find_fd(fd); return smbc_getFunctionLseek(statcont)(statcont, file, offset, whence); } int smbc_close(int fd) { SMBCFILE * file = find_fd(fd); del_fd(fd); return smbc_getFunctionClose(statcont)(statcont, file); } int smbc_unlink(const char *fname) { return smbc_getFunctionUnlink(statcont)(statcont, fname); } int smbc_rename(const char *ourl, const char *nurl) { return smbc_getFunctionRename(statcont)(statcont, ourl, statcont, nurl); } int smbc_opendir(const char *durl) { SMBCFILE * file; int fd; file = smbc_getFunctionOpendir(statcont)(statcont, durl); if (!file) return -1; fd = add_fd(file); if (fd == -1) smbc_getFunctionClosedir(statcont)(statcont, file); return fd; } int smbc_closedir(int dh) { SMBCFILE * file = find_fd(dh); del_fd(dh); return smbc_getFunctionClosedir(statcont)(statcont, file); } int smbc_getdents(unsigned int dh, struct smbc_dirent *dirp, int count) { SMBCFILE * file = find_fd(dh); return smbc_getFunctionGetdents(statcont)(statcont, file, dirp, count); } struct smbc_dirent * smbc_readdir(unsigned int dh) { SMBCFILE * file = find_fd(dh); return smbc_getFunctionReaddir(statcont)(statcont, file); } off_t smbc_telldir(int dh) { SMBCFILE * file = find_fd(dh); return smbc_getFunctionTelldir(statcont)(statcont, file); } int smbc_lseekdir(int fd, off_t offset) { SMBCFILE * file = find_fd(fd); return smbc_getFunctionLseekdir(statcont)(statcont, file, offset); } int smbc_mkdir(const char *durl, mode_t mode) { return smbc_getFunctionMkdir(statcont)(statcont, durl, mode); } int smbc_rmdir(const char *durl) { return smbc_getFunctionRmdir(statcont)(statcont, durl); } int smbc_stat(const char *url, struct stat *st) { return smbc_getFunctionStat(statcont)(statcont, url, st); } int smbc_fstat(int fd, struct stat *st) { SMBCFILE * file = find_fd(fd); return smbc_getFunctionFstat(statcont)(statcont, file, st); } int smbc_statvfs(char *path, struct statvfs *st) { return smbc_getFunctionStatVFS(statcont)(statcont, path, st); } int smbc_fstatvfs(int fd, struct statvfs *st) { SMBCFILE * file = find_fd(fd); return smbc_getFunctionFstatVFS(statcont)(statcont, file, st); } int smbc_ftruncate(int fd, off_t size) { SMBCFILE * file = find_fd(fd); return smbc_getFunctionFtruncate(statcont)(statcont, file, size); } int smbc_chmod(const char *url, mode_t mode) { return smbc_getFunctionChmod(statcont)(statcont, url, mode); } int smbc_utimes(const char *fname, struct timeval *tbuf) { return smbc_getFunctionUtimes(statcont)(statcont, fname, tbuf); } #ifdef HAVE_UTIME_H int smbc_utime(const char *fname, struct utimbuf *utbuf) { struct timeval tv[2]; if (utbuf == NULL) return smbc_getFunctionUtimes(statcont)(statcont, fname, NULL); tv[0].tv_sec = utbuf->actime; tv[1].tv_sec = utbuf->modtime; tv[0].tv_usec = tv[1].tv_usec = 0; return smbc_getFunctionUtimes(statcont)(statcont, fname, tv); } #endif int smbc_setxattr(const char *fname, const char *name, const void *value, size_t size, int flags) { return smbc_getFunctionSetxattr(statcont)(statcont, fname, name, value, size, flags); } int smbc_lsetxattr(const char *fname, const char *name, const void *value, size_t size, int flags) { return smbc_getFunctionSetxattr(statcont)(statcont, fname, name, value, size, flags); } int smbc_fsetxattr(int fd, const char *name, const void *value, size_t size, int flags) { SMBCFILE * file = find_fd(fd); if (file == NULL) { errno = EBADF; return -1; } return smbc_getFunctionSetxattr(statcont)(statcont, file->fname, name, value, size, flags); } int smbc_getxattr(const char *fname, const char *name, const void *value, size_t size) { return smbc_getFunctionGetxattr(statcont)(statcont, fname, name, value, size); } int smbc_lgetxattr(const char *fname, const char *name, const void *value, size_t size) { return smbc_getFunctionGetxattr(statcont)(statcont, fname, name, value, size); } int smbc_fgetxattr(int fd, const char *name, const void *value, size_t size) { SMBCFILE * file = find_fd(fd); if (file == NULL) { errno = EBADF; return -1; } return smbc_getFunctionGetxattr(statcont)(statcont, file->fname, name, value, size); } int smbc_removexattr(const char *fname, const char *name) { return smbc_getFunctionRemovexattr(statcont)(statcont, fname, name); } int smbc_lremovexattr(const char *fname, const char *name) { return smbc_getFunctionRemovexattr(statcont)(statcont, fname, name); } int smbc_fremovexattr(int fd, const char *name) { SMBCFILE * file = find_fd(fd); if (file == NULL) { errno = EBADF; return -1; } return smbc_getFunctionRemovexattr(statcont)(statcont, file->fname, name); } int smbc_listxattr(const char *fname, char *list, size_t size) { return smbc_getFunctionListxattr(statcont)(statcont, fname, list, size); } int smbc_llistxattr(const char *fname, char *list, size_t size) { return smbc_getFunctionListxattr(statcont)(statcont, fname, list, size); } int smbc_flistxattr(int fd, char *list, size_t size) { SMBCFILE * file = find_fd(fd); if (file == NULL) { errno = EBADF; return -1; } return smbc_getFunctionListxattr(statcont)(statcont, file->fname, list, size); } int smbc_print_file(const char *fname, const char *printq) { return smbc_getFunctionPrintFile(statcont)(statcont, fname, statcont, printq); } int smbc_open_print_job(const char *fname) { SMBCFILE * file; file = smbc_getFunctionOpenPrintJob(statcont)(statcont, fname); if (!file) return -1; return file->cli_fd; } int smbc_list_print_jobs(const char *purl, smbc_list_print_job_fn fn) { return smbc_getFunctionListPrintJobs(statcont)(statcont, purl, fn); } int smbc_unlink_print_job(const char *purl, int id) { return smbc_getFunctionUnlinkPrintJob(statcont)(statcont, purl, id); }