diff options
Diffstat (limited to 'pseudo_client.h')
| -rw-r--r-- | pseudo_client.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/pseudo_client.h b/pseudo_client.h new file mode 100644 index 0000000..b5a6075 --- /dev/null +++ b/pseudo_client.h @@ -0,0 +1,82 @@ +/* + * pseudo_client.h, shared declarations for client + * + * Copyright (c) 2008-2010 Wind River Systems, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the Lesser GNU General Public License version 2.1 as + * published by the Free Software Foundation. + * + * 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 Lesser GNU General Public License for more details. + * + * You should have received a copy of the Lesser GNU General Public License + * version 2.1 along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ +extern pseudo_msg_t *pseudo_client_op(op_id_t op, int flags, int fd, int dirfd, const char *path, const struct stat64 *buf, ...); +extern void pseudo_antimagic(void); +extern void pseudo_magic(void); +extern void pseudo_client_reset(void); +extern void pseudo_client_touchuid(void); +extern void pseudo_client_touchgid(void); +extern char *pseudo_client_fdpath(int fd); +extern int pseudo_client_shutdown(void); +extern int pseudo_fd(int fd, int how); +extern void pseudo_stat32_from64(struct stat *, struct stat64 *); +extern void pseudo_stat64_from32(struct stat64 *, struct stat *); +#define MOVE_FD 0 +#define COPY_FD 1 +#define PSEUDO_MIN_FD 20 +extern int pseudo_euid; +extern int pseudo_fuid; +extern int pseudo_suid; +extern int pseudo_ruid; +extern int pseudo_egid; +extern int pseudo_sgid; +extern int pseudo_rgid; +extern int pseudo_fgid; +extern int pseudo_dir_fd; + +/* Root can read, write, and execute files which have no read, write, + * or execute permissions. + * + * A non-root user can't. + * + * When doing anything which actually writes to the filesystem, we add in + * the user read/write/execute bits. When storing to the database, though, + * we mask out any such bits which weren't in the original mode. + * + * None of this will behave very sensibly if umask has 0700 bits in it; + * this is a known limitation. + */ +#define PSEUDO_FS_MODE(mode) ((mode) | S_IRUSR | S_IWUSR | S_IXUSR) +#define PSEUDO_DB_MODE(fs_mode, user_mode) (((fs_mode) & ~0700) | ((user_mode & 0700))) + +/* some systems might not have *at(). We like to define operations in + * terms of each other, and for instance, open(...) is the same as + * openat(AT_FDCWD, ...). If no AT_FDCWD is provided, any value that can't + * be a valid file descriptor will do. Using -2 because -1 could be + * mistaken for a failed syscall return. Similarly, any value which isn't + * zero will do to fake AT_SYMLINK_NOFOLLOW. Finally, if this happened, + * we set our own flag we can use to indicate that dummy implementations + * of the _at functions are needed. + */ +#ifndef AT_FDCWD +#define AT_FDCWD -2 +#define AT_SYMLINK_NOFOLLOW 1 +#define PSEUDO_NO_REAL_AT_FUNCTIONS +#endif + +/* Likewise, someone might not have O_LARGEFILE (the flag equivalent to + * using open64()). Since open64() is the same as O_LARGEFILE in flags, + * we implement it that way... If the system has no O_LARGEFILE, we'll + * just call open() with nothing special. + */ +#ifndef O_LARGEFILE +#define O_LARGEFILE 0 +#endif + |