1*353ac78dSAneesh Kumar K.V /* 2*353ac78dSAneesh Kumar K.V * Virtio 9p 3*353ac78dSAneesh Kumar K.V * 4*353ac78dSAneesh Kumar K.V * Copyright IBM, Corp. 2010 5*353ac78dSAneesh Kumar K.V * 6*353ac78dSAneesh Kumar K.V * Authors: 7*353ac78dSAneesh Kumar K.V * Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> 8*353ac78dSAneesh Kumar K.V * 9*353ac78dSAneesh Kumar K.V * This work is licensed under the terms of the GNU GPL, version 2. See 10*353ac78dSAneesh Kumar K.V * the COPYING file in the top-level directory. 11*353ac78dSAneesh Kumar K.V * 12*353ac78dSAneesh Kumar K.V */ 13*353ac78dSAneesh Kumar K.V #ifndef _FILEOP_H 14*353ac78dSAneesh Kumar K.V #define _FILEOP_H 15*353ac78dSAneesh Kumar K.V #include <sys/types.h> 16*353ac78dSAneesh Kumar K.V #include <dirent.h> 17*353ac78dSAneesh Kumar K.V #include <sys/time.h> 18*353ac78dSAneesh Kumar K.V #include <utime.h> 19*353ac78dSAneesh Kumar K.V #include <sys/stat.h> 20*353ac78dSAneesh Kumar K.V #include <sys/uio.h> 21*353ac78dSAneesh Kumar K.V #include <sys/vfs.h> 22*353ac78dSAneesh Kumar K.V #define SM_LOCAL_MODE_BITS 0600 23*353ac78dSAneesh Kumar K.V #define SM_LOCAL_DIR_MODE_BITS 0700 24*353ac78dSAneesh Kumar K.V 25*353ac78dSAneesh Kumar K.V typedef enum 26*353ac78dSAneesh Kumar K.V { 27*353ac78dSAneesh Kumar K.V /* 28*353ac78dSAneesh Kumar K.V * Server will try to set uid/gid. 29*353ac78dSAneesh Kumar K.V * On failure ignore the error. 30*353ac78dSAneesh Kumar K.V */ 31*353ac78dSAneesh Kumar K.V SM_NONE = 0, 32*353ac78dSAneesh Kumar K.V /* 33*353ac78dSAneesh Kumar K.V * uid/gid set on fileserver files 34*353ac78dSAneesh Kumar K.V */ 35*353ac78dSAneesh Kumar K.V SM_PASSTHROUGH = 1, 36*353ac78dSAneesh Kumar K.V /* 37*353ac78dSAneesh Kumar K.V * uid/gid part of xattr 38*353ac78dSAneesh Kumar K.V */ 39*353ac78dSAneesh Kumar K.V SM_MAPPED, 40*353ac78dSAneesh Kumar K.V } SecModel; 41*353ac78dSAneesh Kumar K.V 42*353ac78dSAneesh Kumar K.V typedef struct FsCred 43*353ac78dSAneesh Kumar K.V { 44*353ac78dSAneesh Kumar K.V uid_t fc_uid; 45*353ac78dSAneesh Kumar K.V gid_t fc_gid; 46*353ac78dSAneesh Kumar K.V mode_t fc_mode; 47*353ac78dSAneesh Kumar K.V dev_t fc_rdev; 48*353ac78dSAneesh Kumar K.V } FsCred; 49*353ac78dSAneesh Kumar K.V 50*353ac78dSAneesh Kumar K.V struct xattr_operations; 51*353ac78dSAneesh Kumar K.V 52*353ac78dSAneesh Kumar K.V typedef struct FsContext 53*353ac78dSAneesh Kumar K.V { 54*353ac78dSAneesh Kumar K.V char *fs_root; 55*353ac78dSAneesh Kumar K.V SecModel fs_sm; 56*353ac78dSAneesh Kumar K.V uid_t uid; 57*353ac78dSAneesh Kumar K.V struct xattr_operations **xops; 58*353ac78dSAneesh Kumar K.V } FsContext; 59*353ac78dSAneesh Kumar K.V 60*353ac78dSAneesh Kumar K.V void cred_init(FsCred *); 61*353ac78dSAneesh Kumar K.V 62*353ac78dSAneesh Kumar K.V typedef struct FileOperations 63*353ac78dSAneesh Kumar K.V { 64*353ac78dSAneesh Kumar K.V int (*lstat)(FsContext *, const char *, struct stat *); 65*353ac78dSAneesh Kumar K.V ssize_t (*readlink)(FsContext *, const char *, char *, size_t); 66*353ac78dSAneesh Kumar K.V int (*chmod)(FsContext *, const char *, FsCred *); 67*353ac78dSAneesh Kumar K.V int (*chown)(FsContext *, const char *, FsCred *); 68*353ac78dSAneesh Kumar K.V int (*mknod)(FsContext *, const char *, FsCred *); 69*353ac78dSAneesh Kumar K.V int (*utimensat)(FsContext *, const char *, const struct timespec *); 70*353ac78dSAneesh Kumar K.V int (*remove)(FsContext *, const char *); 71*353ac78dSAneesh Kumar K.V int (*symlink)(FsContext *, const char *, const char *, FsCred *); 72*353ac78dSAneesh Kumar K.V int (*link)(FsContext *, const char *, const char *); 73*353ac78dSAneesh Kumar K.V int (*setuid)(FsContext *, uid_t); 74*353ac78dSAneesh Kumar K.V int (*close)(FsContext *, int); 75*353ac78dSAneesh Kumar K.V int (*closedir)(FsContext *, DIR *); 76*353ac78dSAneesh Kumar K.V DIR *(*opendir)(FsContext *, const char *); 77*353ac78dSAneesh Kumar K.V int (*open)(FsContext *, const char *, int); 78*353ac78dSAneesh Kumar K.V int (*open2)(FsContext *, const char *, int, FsCred *); 79*353ac78dSAneesh Kumar K.V void (*rewinddir)(FsContext *, DIR *); 80*353ac78dSAneesh Kumar K.V off_t (*telldir)(FsContext *, DIR *); 81*353ac78dSAneesh Kumar K.V struct dirent *(*readdir)(FsContext *, DIR *); 82*353ac78dSAneesh Kumar K.V void (*seekdir)(FsContext *, DIR *, off_t); 83*353ac78dSAneesh Kumar K.V ssize_t (*preadv)(FsContext *, int, const struct iovec *, int, off_t); 84*353ac78dSAneesh Kumar K.V ssize_t (*pwritev)(FsContext *, int, const struct iovec *, int, off_t); 85*353ac78dSAneesh Kumar K.V int (*mkdir)(FsContext *, const char *, FsCred *); 86*353ac78dSAneesh Kumar K.V int (*fstat)(FsContext *, int, struct stat *); 87*353ac78dSAneesh Kumar K.V int (*rename)(FsContext *, const char *, const char *); 88*353ac78dSAneesh Kumar K.V int (*truncate)(FsContext *, const char *, off_t); 89*353ac78dSAneesh Kumar K.V int (*fsync)(FsContext *, int, int); 90*353ac78dSAneesh Kumar K.V int (*statfs)(FsContext *s, const char *path, struct statfs *stbuf); 91*353ac78dSAneesh Kumar K.V ssize_t (*lgetxattr)(FsContext *, const char *, 92*353ac78dSAneesh Kumar K.V const char *, void *, size_t); 93*353ac78dSAneesh Kumar K.V ssize_t (*llistxattr)(FsContext *, const char *, void *, size_t); 94*353ac78dSAneesh Kumar K.V int (*lsetxattr)(FsContext *, const char *, 95*353ac78dSAneesh Kumar K.V const char *, void *, size_t, int); 96*353ac78dSAneesh Kumar K.V int (*lremovexattr)(FsContext *, const char *, const char *); 97*353ac78dSAneesh Kumar K.V void *opaque; 98*353ac78dSAneesh Kumar K.V } FileOperations; 99*353ac78dSAneesh Kumar K.V 100*353ac78dSAneesh Kumar K.V static inline const char *rpath(FsContext *ctx, const char *path) 101*353ac78dSAneesh Kumar K.V { 102*353ac78dSAneesh Kumar K.V /* FIXME: so wrong... */ 103*353ac78dSAneesh Kumar K.V static char buffer[4096]; 104*353ac78dSAneesh Kumar K.V snprintf(buffer, sizeof(buffer), "%s/%s", ctx->fs_root, path); 105*353ac78dSAneesh Kumar K.V return buffer; 106*353ac78dSAneesh Kumar K.V } 107*353ac78dSAneesh Kumar K.V #endif 108