/*
Unix SMB/Netbios implementation.
- Version 3.0
+ Version 1.9.
VFS initialisation and support functions
Copyright (C) Tim Potter 1999
#include "includes.h"
-extern int DEBUGLEVEL;
-
/* Some structures to help us initialise the vfs operations table */
struct vfs_syminfo {
vfswrap_lock,
vfswrap_symlink,
vfswrap_readlink,
+ vfswrap_link,
+ vfswrap_mknod,
+ vfswrap_realpath,
vfswrap_fget_nt_acl,
vfswrap_get_nt_acl,
vfswrap_fset_nt_acl,
vfswrap_set_nt_acl,
+ /* POSIX ACL operations. */
#if defined(HAVE_NO_ACLS)
NULL,
- NULL
+ NULL,
#else
vfswrap_chmod_acl,
- vfswrap_fchmod_acl
+ vfswrap_fchmod_acl,
#endif
+ vfswrap_sys_acl_get_entry,
+ vfswrap_sys_acl_get_tag_type,
+ vfswrap_sys_acl_get_permset,
+ vfswrap_sys_acl_get_qualifier,
+ vfswrap_sys_acl_get_file,
+ vfswrap_sys_acl_get_fd,
+ vfswrap_sys_acl_clear_perms,
+ vfswrap_sys_acl_add_perm,
+ vfswrap_sys_acl_to_text,
+ vfswrap_sys_acl_init,
+ vfswrap_sys_acl_create_entry,
+ vfswrap_sys_acl_set_tag_type,
+ vfswrap_sys_acl_set_qualifier,
+ vfswrap_sys_acl_set_permset,
+ vfswrap_sys_acl_valid,
+ vfswrap_sys_acl_set_file,
+ vfswrap_sys_acl_set_fd,
+ vfswrap_sys_acl_delete_def_file,
+ vfswrap_sys_acl_get_perm,
+ vfswrap_sys_acl_free_text,
+ vfswrap_sys_acl_free_acl,
+ vfswrap_sys_acl_free_qualifier
};
/****************************************************************************
static BOOL vfs_init_default(connection_struct *conn)
{
- DEBUG(3, ("Initialising default vfs hooks\n"));
+ DEBUG(3, ("Initialising default vfs hooks\n"));
- memcpy(&conn->vfs_ops, &default_vfs_ops, sizeof(struct vfs_ops));
- return True;
+ memcpy(&conn->vfs_ops, &default_vfs_ops, sizeof(struct vfs_ops));
+ return True;
}
/****************************************************************************
initialise custom vfs hooks
****************************************************************************/
-#ifdef HAVE_LIBDL
static BOOL vfs_init_custom(connection_struct *conn)
{
int vfs_version = -1;
struct vfs_ops *ops, *(*init_fptr)(int *, struct vfs_ops *);
- DEBUG(3, ("Initialising custom vfs hooks from %s\n",
- lp_vfsobj(SNUM(conn))));
+ DEBUG(3, ("Initialising custom vfs hooks from %s\n", lp_vfsobj(SNUM(conn))));
/* Open object file */
- if ((conn->dl_handle = sys_dlopen(lp_vfsobj(SNUM(conn)),
- RTLD_NOW | RTLD_GLOBAL)) == NULL) {
- DEBUG(0, ("Error opening %s: %s\n", lp_vfsobj(SNUM(conn)), sys_dlerror()));
+
+ if ((conn->dl_handle = sys_dlopen(lp_vfsobj(SNUM(conn)), RTLD_NOW | RTLD_GLOBAL)) == NULL) {
+ DEBUG(0, ("Error opening %s: %s\n", lp_vfsobj(SNUM(conn)), dlerror()));
return False;
}
/* Get handle on vfs_init() symbol */
+
init_fptr = (struct vfs_ops *(*)(int *, struct vfs_ops *))sys_dlsym(conn->dl_handle, "vfs_init");
if (init_fptr == NULL) {
- DEBUG(0, ("No vfs_init() symbol found in %s\n",
- lp_vfsobj(SNUM(conn))));
+ DEBUG(0, ("No vfs_init() symbol found in %s\n", lp_vfsobj(SNUM(conn))));
return False;
}
/* Initialise vfs_ops structure */
+
conn->vfs_ops = default_vfs_ops;
- if ((ops = init_fptr(&vfs_version, &conn->vfs_ops)) == NULL) {
+ if ((ops = init_fptr(&vfs_version, &default_vfs_ops)) == NULL) {
DEBUG(0, ("vfs_init function from %s failed\n", lp_vfsobj(SNUM(conn))));
return False;
}
-
+
if (vfs_version != SMB_VFS_INTERFACE_VERSION) {
DEBUG(0, ("vfs_init returned wrong interface version info (was %d, should be %d)\n",
- vfs_version, SMB_VFS_INTERFACE_VERSION ));
+ vfs_version, SMB_VFS_INTERFACE_VERSION ));
return False;
}
-
+
if (ops != &conn->vfs_ops) {
memcpy(&conn->vfs_ops, ops, sizeof(struct vfs_ops));
}
return True;
}
-#endif
/*****************************************************************
Generic VFS init.
******************************************************************/
-BOOL vfs_init(connection_struct *conn)
+BOOL smbd_vfs_init(connection_struct *conn)
{
if (*lp_vfsobj(SNUM(conn))) {
-#ifdef HAVE_LIBDL
/* Loadable object file */
if (!vfs_init_custom(conn)) {
- DEBUG(0, ("vfs_init: vfs_init_custom failed\n"));
+ DEBUG(0, ("smbd_vfs_init: vfs_init_custom failed\n"));
return False;
}
return True;
-#else
- DEBUG(0, ("vfs_init: No libdl present - cannot use VFS objects\n"));
- return False;
-#endif
}
/* Normal share - initialise with disk access functions */
}
/*******************************************************************
- Check if a vfs file exists.
+ Check if an object exists in the vfs.
********************************************************************/
-BOOL vfs_file_exist(connection_struct *conn,const char *fname,SMB_STRUCT_STAT *sbuf)
+BOOL vfs_object_exist(connection_struct *conn,const char *fname,SMB_STRUCT_STAT *sbuf)
{
SMB_STRUCT_STAT st;
ZERO_STRUCTP(sbuf);
- if (vfs_stat(conn,fname,sbuf) != 0)
+ if (vfs_stat(conn,fname,sbuf) == -1)
return(False);
+ return True;
+}
+
+/*******************************************************************
+ Check if a file exists in the vfs.
+********************************************************************/
+
+BOOL vfs_file_exist(connection_struct *conn, const char *fname,SMB_STRUCT_STAT *sbuf)
+{
+ SMB_STRUCT_STAT st;
+
+ if (!sbuf)
+ sbuf = &st;
+
+ ZERO_STRUCTP(sbuf);
+ if (vfs_stat(conn,fname,sbuf) == -1)
+ return False;
return(S_ISREG(sbuf->st_mode));
}
while (total < byte_count)
{
ssize_t ret = fsp->conn->vfs_ops.read(fsp, fsp->fd, buf + total,
- byte_count - total);
+ byte_count - total);
if (ret == 0) return total;
if (ret == -1) {
ssize_t vfs_write_data(files_struct *fsp,const char *buffer,size_t N)
{
- size_t total=0;
- ssize_t ret;
+ size_t total=0;
+ ssize_t ret;
- while (total < N)
- {
- ret = fsp->conn->vfs_ops.write(fsp,fsp->fd,buffer + total,N - total);
+ while (total < N) {
+ ret = fsp->conn->vfs_ops.write(fsp,fsp->fd,buffer + total,N - total);
- if (ret == -1) return -1;
- if (ret == 0) return total;
+ if (ret == -1)
+ return -1;
+ if (ret == 0)
+ return total;
- total += ret;
- }
- return (ssize_t)total;
+ total += ret;
+ }
+ return (ssize_t)total;
}
/****************************************************************************
{
int ret;
SMB_STRUCT_STAT st;
- struct vfs_ops *vfs_ops = &fsp->conn->vfs_ops;
+ connection_struct *conn = fsp->conn;
+ struct vfs_ops *vfs_ops = &conn->vfs_ops;
+ SMB_OFF_T space_avail;
+ SMB_BIG_UINT bsize,dfree,dsize;
- if (!lp_strict_allocate(SNUM(fsp->conn)))
- return vfs_set_filelen(fsp, len);
-
release_level_2_oplocks_on_change(fsp);
/*
DEBUG(10,("vfs_allocate_file_space: file %s, shrink. Current size %.0f\n",
fsp->fsp_name, (double)st.st_size ));
+ flush_write_cache(fsp, SIZECHANGE_FLUSH);
if ((ret = vfs_ops->ftruncate(fsp, fsp->fd, len)) != -1) {
set_filelen_write_cache(fsp, len);
}
return ret;
}
- /* Grow - we need to write out the space.... */
- {
- static unsigned char zero_space[65536];
-
- SMB_OFF_T start_pos = st.st_size;
- SMB_OFF_T len_to_write = len - st.st_size;
- SMB_OFF_T retlen;
-
- DEBUG(10,("vfs_allocate_file_space: file %s, grow. Current size %.0f\n",
- fsp->fsp_name, (double)st.st_size ));
+ /* Grow - we need to test if we have enough space. */
- if ((retlen = vfs_ops->lseek(fsp, fsp->fd, start_pos, SEEK_SET)) != start_pos)
- return -1;
+ if (!lp_strict_allocate(SNUM(fsp->conn)))
+ return 0;
- while ( len_to_write > 0) {
- SMB_OFF_T current_len_to_write = MIN(sizeof(zero_space),len_to_write);
-
- retlen = vfs_ops->write(fsp,fsp->fd,(const char *)zero_space,current_len_to_write);
- if (retlen <= 0) {
- /* Write fail - return to original size. */
- int save_errno = errno;
- fsp->conn->vfs_ops.ftruncate(fsp, fsp->fd, st.st_size);
- errno = save_errno;
- DEBUG(10,("vfs_allocate_file_space: file %s, grow. write fail %s\n",
- fsp->fsp_name, strerror(errno) ));
- return -1;
- }
+ len -= st.st_size;
+ len /= 1024; /* Len is now number of 1k blocks needed. */
+ space_avail = (SMB_OFF_T)conn->vfs_ops.disk_free(conn,fsp->fsp_name,False,&bsize,&dfree,&dsize);
- DEBUG(10,("vfs_allocate_file_space: file %s, grow. wrote %.0f\n",
- fsp->fsp_name, (double)retlen ));
+ DEBUG(10,("vfs_allocate_file_space: file %s, grow. Current size %.0f, needed blocks = %lu, space avail = %lu\n",
+ fsp->fsp_name, (double)st.st_size, (unsigned long)len, (unsigned long)space_avail ));
- len_to_write -= retlen;
- }
- set_filelen_write_cache(fsp, len);
+ if (len > space_avail) {
+ errno = ENOSPC;
+ return -1;
}
+
return 0;
}
int ret;
release_level_2_oplocks_on_change(fsp);
+ DEBUG(10,("vfs_set_filelen: ftruncate %s to len %.0f\n", fsp->fsp_name, (double)len));
+ flush_write_cache(fsp, SIZECHANGE_FLUSH);
if ((ret = fsp->conn->vfs_ops.ftruncate(fsp, fsp->fd, len)) != -1)
set_filelen_write_cache(fsp, len);
/* number of list structures for a caching GetWd function. */
#define MAX_GETWDCACHE (50)
-struct
-{
- SMB_DEV_T dev; /* These *must* be compatible with the types returned in a stat() call. */
- SMB_INO_T inode; /* These *must* be compatible with the types returned in a stat() call. */
- char *dos_path; /* The pathname in DOS format. */
- BOOL valid;
+struct {
+ SMB_DEV_T dev; /* These *must* be compatible with the types returned in a stat() call. */
+ SMB_INO_T inode; /* These *must* be compatible with the types returned in a stat() call. */
+ char *dos_path; /* The pathname in DOS format. */
+ BOOL valid;
} ino_list[MAX_GETWDCACHE];
extern BOOL use_getwd_cache;
char *vfs_GetWd(connection_struct *conn, char *path)
{
- pstring s;
- static BOOL getwd_cache_init = False;
- SMB_STRUCT_STAT st, st2;
- int i;
-
- *s = 0;
-
- if (!use_getwd_cache)
- return(vfs_getwd(conn,path));
-
- /* init the cache */
- if (!getwd_cache_init)
- {
- getwd_cache_init = True;
- for (i=0;i<MAX_GETWDCACHE;i++)
- {
- string_set(&ino_list[i].dos_path,"");
- ino_list[i].valid = False;
- }
- }
-
- /* Get the inode of the current directory, if this doesn't work we're
- in trouble :-) */
-
- if (vfs_stat(conn, ".",&st) == -1)
- {
- DEBUG(0,("Very strange, couldn't stat \".\" path=%s\n", path));
- return(vfs_getwd(conn,path));
- }
-
-
- for (i=0; i<MAX_GETWDCACHE; i++)
- if (ino_list[i].valid)
- {
-
- /* If we have found an entry with a matching inode and dev number
- then find the inode number for the directory in the cached string.
- If this agrees with that returned by the stat for the current
- directory then all is o.k. (but make sure it is a directory all
- the same...) */
-
- if (st.st_ino == ino_list[i].inode &&
- st.st_dev == ino_list[i].dev)
- {
- if (vfs_stat(conn,ino_list[i].dos_path,&st2) == 0)
- {
- if (st.st_ino == st2.st_ino &&
- st.st_dev == st2.st_dev &&
- (st2.st_mode & S_IFMT) == S_IFDIR)
- {
- pstrcpy (path, ino_list[i].dos_path);
-
- /* promote it for future use */
- array_promote((char *)&ino_list[0],sizeof(ino_list[0]),i);
- return (path);
- }
- else
- {
- /* If the inode is different then something's changed,
- scrub the entry and start from scratch. */
- ino_list[i].valid = False;
- }
- }
- }
- }
+ pstring s;
+ static BOOL getwd_cache_init = False;
+ SMB_STRUCT_STAT st, st2;
+ int i;
+
+ *s = 0;
+
+ if (!use_getwd_cache)
+ return(vfs_getwd(conn,path));
+
+ /* init the cache */
+ if (!getwd_cache_init) {
+ getwd_cache_init = True;
+ for (i=0;i<MAX_GETWDCACHE;i++) {
+ string_set(&ino_list[i].dos_path,"");
+ ino_list[i].valid = False;
+ }
+ }
+
+ /* Get the inode of the current directory, if this doesn't work we're
+ in trouble :-) */
+
+ if (vfs_stat(conn, ".",&st) == -1) {
+ DEBUG(0,("Very strange, couldn't stat \".\" path=%s\n", path));
+ return(vfs_getwd(conn,path));
+ }
+
+ for (i=0; i<MAX_GETWDCACHE; i++) {
+ if (ino_list[i].valid) {
+
+ /* If we have found an entry with a matching inode and dev number
+ then find the inode number for the directory in the cached string.
+ If this agrees with that returned by the stat for the current
+ directory then all is o.k. (but make sure it is a directory all
+ the same...) */
+
+ if (st.st_ino == ino_list[i].inode && st.st_dev == ino_list[i].dev) {
+ if (vfs_stat(conn,ino_list[i].dos_path,&st2) == 0) {
+ if (st.st_ino == st2.st_ino && st.st_dev == st2.st_dev &&
+ (st2.st_mode & S_IFMT) == S_IFDIR) {
+ pstrcpy (path, ino_list[i].dos_path);
+
+ /* promote it for future use */
+ array_promote((char *)&ino_list[0],sizeof(ino_list[0]),i);
+ return (path);
+ } else {
+ /* If the inode is different then something's changed,
+ scrub the entry and start from scratch. */
+ ino_list[i].valid = False;
+ }
+ }
+ }
+ }
+ }
- /* We don't have the information to hand so rely on traditional methods.
- The very slow getcwd, which spawns a process on some systems, or the
- not quite so bad getwd. */
+ /* We don't have the information to hand so rely on traditional methods.
+ The very slow getcwd, which spawns a process on some systems, or the
+ not quite so bad getwd. */
- if (!vfs_getwd(conn,s))
- {
- DEBUG(0,("vfs_GetWd: vfs_getwd call failed, errno %s\n",strerror(errno)));
- return (NULL);
- }
+ if (!vfs_getwd(conn,s)) {
+ DEBUG(0,("vfs_GetWd: vfs_getwd call failed, errno %s\n",strerror(errno)));
+ return (NULL);
+ }
- pstrcpy(path,s);
+ pstrcpy(path,s);
- DEBUG(5,("vfs_GetWd %s, inode %.0f, dev %.0f\n",s,(double)st.st_ino,(double)st.st_dev));
+ DEBUG(5,("vfs_GetWd %s, inode %.0f, dev %.0f\n",s,(double)st.st_ino,(double)st.st_dev));
- /* add it to the cache */
- i = MAX_GETWDCACHE - 1;
- string_set(&ino_list[i].dos_path,s);
- ino_list[i].dev = st.st_dev;
- ino_list[i].inode = st.st_ino;
- ino_list[i].valid = True;
+ /* add it to the cache */
+ i = MAX_GETWDCACHE - 1;
+ string_set(&ino_list[i].dos_path,s);
+ ino_list[i].dev = st.st_dev;
+ ino_list[i].inode = st.st_ino;
+ ino_list[i].valid = True;
- /* put it at the top of the list */
- array_promote((char *)&ino_list[0],sizeof(ino_list[0]),i);
+ /* put it at the top of the list */
+ array_promote((char *)&ino_list[0],sizeof(ino_list[0]),i);
- return (path);
+ return (path);
}
/*******************************************************************
BOOL reduce_name(connection_struct *conn, char *s,char *dir,BOOL widelinks)
{
#ifndef REDUCE_PATHS
- return True;
+ return True;
#else
- pstring dir2;
- pstring wd;
- pstring base_name;
- pstring newname;
- char *p=NULL;
- BOOL relative = (*s != '/');
-
- *dir2 = *wd = *base_name = *newname = 0;
-
- if (widelinks)
- {
- unix_clean_name(s);
- /* can't have a leading .. */
- if (strncmp(s,"..",2) == 0 && (s[2]==0 || s[2]=='/'))
- {
- DEBUG(3,("Illegal file name? (%s)\n",s));
- return(False);
- }
+ pstring dir2;
+ pstring wd;
+ pstring base_name;
+ pstring newname;
+ char *p=NULL;
+ BOOL relative = (*s != '/');
+
+ *dir2 = *wd = *base_name = *newname = 0;
+
+ if (widelinks) {
+ unix_clean_name(s);
+ /* can't have a leading .. */
+ if (strncmp(s,"..",2) == 0 && (s[2]==0 || s[2]=='/')) {
+ DEBUG(3,("Illegal file name? (%s)\n",s));
+ return(False);
+ }
- if (strlen(s) == 0)
- pstrcpy(s,"./");
-
- return(True);
- }
-
- DEBUG(3,("reduce_name [%s] [%s]\n",s,dir));
-
- /* remove any double slashes */
- all_string_sub(s,"//","/",0);
-
- pstrcpy(base_name,s);
- p = strrchr_m(base_name,'/');
-
- if (!p)
- return(True);
-
- if (!vfs_GetWd(conn,wd))
- {
- DEBUG(0,("couldn't vfs_GetWd for %s %s\n",s,dir));
- return(False);
- }
-
- if (vfs_ChDir(conn,dir) != 0)
- {
- DEBUG(0,("couldn't vfs_ChDir to %s\n",dir));
- return(False);
- }
-
- if (!vfs_GetWd(conn,dir2))
- {
- DEBUG(0,("couldn't vfs_GetWd for %s\n",dir));
- vfs_ChDir(conn,wd);
- return(False);
- }
-
- if (p && (p != base_name))
- {
- *p = 0;
- if (strcmp(p+1,".")==0)
- p[1]=0;
- if (strcmp(p+1,"..")==0)
- *p = '/';
- }
-
- if (vfs_ChDir(conn,base_name) != 0)
- {
- vfs_ChDir(conn,wd);
- DEBUG(3,("couldn't vfs_ChDir for %s %s basename=%s\n",s,dir,base_name));
- return(False);
- }
-
- if (!vfs_GetWd(conn,newname))
- {
- vfs_ChDir(conn,wd);
- DEBUG(2,("couldn't get vfs_GetWd for %s %s\n",s,dir2));
- return(False);
- }
-
- if (p && (p != base_name))
- {
- pstrcat(newname,"/");
- pstrcat(newname,p+1);
- }
-
- {
- size_t l = strlen(dir2);
- if (dir2[l-1] == '/')
- l--;
-
- if (strncmp(newname,dir2,l) != 0)
- {
- vfs_ChDir(conn,wd);
- DEBUG(2,("Bad access attempt? s=%s dir=%s newname=%s l=%d\n",s,dir2,newname,(int)l));
- return(False);
- }
+ if (strlen(s) == 0)
+ pstrcpy(s,"./");
- if (relative)
- {
- if (newname[l] == '/')
- pstrcpy(s,newname + l + 1);
- else
- pstrcpy(s,newname+l);
- }
- else
- pstrcpy(s,newname);
- }
+ return(True);
+ }
+
+ DEBUG(3,("reduce_name [%s] [%s]\n",s,dir));
+
+ /* remove any double slashes */
+ all_string_sub(s,"//","/",0);
+
+ pstrcpy(base_name,s);
+ p = strrchr_m(base_name,'/');
+
+ if (!p)
+ return(True);
+
+ if (!vfs_GetWd(conn,wd)) {
+ DEBUG(0,("couldn't vfs_GetWd for %s %s\n",s,dir));
+ return(False);
+ }
+
+ if (vfs_ChDir(conn,dir) != 0) {
+ DEBUG(0,("couldn't vfs_ChDir to %s\n",dir));
+ return(False);
+ }
+
+ if (!vfs_GetWd(conn,dir2)) {
+ DEBUG(0,("couldn't vfs_GetWd for %s\n",dir));
+ vfs_ChDir(conn,wd);
+ return(False);
+ }
+
+ if (p && (p != base_name)) {
+ *p = 0;
+ if (strcmp(p+1,".")==0)
+ p[1]=0;
+ if (strcmp(p+1,"..")==0)
+ *p = '/';
+ }
+
+ if (vfs_ChDir(conn,base_name) != 0) {
+ vfs_ChDir(conn,wd);
+ DEBUG(3,("couldn't vfs_ChDir for %s %s basename=%s\n",s,dir,base_name));
+ return(False);
+ }
+
+ if (!vfs_GetWd(conn,newname)) {
+ vfs_ChDir(conn,wd);
+ DEBUG(2,("couldn't get vfs_GetWd for %s %s\n",s,dir2));
+ return(False);
+ }
+
+ if (p && (p != base_name)) {
+ pstrcat(newname,"/");
+ pstrcat(newname,p+1);
+ }
+
+ {
+ size_t l = strlen(dir2);
+ if (dir2[l-1] == '/')
+ l--;
+
+ if (strncmp(newname,dir2,l) != 0) {
+ vfs_ChDir(conn,wd);
+ DEBUG(2,("Bad access attempt? s=%s dir=%s newname=%s l=%d\n",s,dir2,newname,(int)l));
+ return(False);
+ }
+
+ if (relative) {
+ if (newname[l] == '/')
+ pstrcpy(s,newname + l + 1);
+ else
+ pstrcpy(s,newname+l);
+ } else
+ pstrcpy(s,newname);
+ }
- vfs_ChDir(conn,wd);
+ vfs_ChDir(conn,wd);
- if (strlen(s) == 0)
- pstrcpy(s,"./");
+ if (strlen(s) == 0)
+ pstrcpy(s,"./");
- DEBUG(3,("reduced to %s\n",s));
- return(True);
+ DEBUG(3,("reduced to %s\n",s));
+ return(True);
#endif
}
git.samba.org / gd / samba-autobuild / .git / blobdiff