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Limits.

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Nuno Cruces
2023-11-24 17:25:02 +00:00
parent 1acb95917a
commit 5653efa70e
10 changed files with 87 additions and 25 deletions
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2
vfs/const.go
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@@ -3,7 +3,7 @@ package vfs
import "github.com/ncruces/go-sqlite3/internal/util"
const (
_MAX_STRING = 512 // Used for short strings: names, error messages…
_MAX_NAME = 512 // Used for short strings: names, error messages…
_MAX_PATHNAME = 512
_DEFAULT_SECTOR_SIZE = 4096
)

4
vfs/readervfs/reader.go
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@@ -7,7 +7,6 @@ import (
type readerVFS struct{}
// Open implements the [vfs.VFS] interface.
func (readerVFS) Open(name string, flags vfs.OpenFlag) (vfs.File, vfs.OpenFlag, error) {
if flags&vfs.OPEN_MAIN_DB == 0 {
return nil, flags, sqlite3.CANTOPEN
@@ -20,17 +19,14 @@ func (readerVFS) Open(name string, flags vfs.OpenFlag) (vfs.File, vfs.OpenFlag,
return nil, flags, sqlite3.CANTOPEN
}
// Delete implements the [vfs.VFS] interface.
func (readerVFS) Delete(name string, dirSync bool) error {
return sqlite3.IOERR_DELETE
}
// Access implements the [vfs.VFS] interface.
func (readerVFS) Access(name string, flag vfs.AccessFlag) (bool, error) {
return false, nil
}
// FullPathname implements the [vfs.VFS] interface.
func (readerVFS) FullPathname(name string) (string, error) {
return name, nil
}

8
vfs/vfs.go
View File

@@ -45,7 +45,7 @@ func ExportHostFunctions(env wazero.HostModuleBuilder) wazero.HostModuleBuilder
}
func vfsFind(ctx context.Context, mod api.Module, zVfsName uint32) uint32 {
name := util.ReadString(mod, zVfsName, _MAX_STRING)
name := util.ReadString(mod, zVfsName, _MAX_NAME)
if vfs := Find(name); vfs != nil && vfs != (vfsOS{}) {
return 1
}
@@ -371,7 +371,7 @@ func vfsURIParameters(ctx context.Context, mod api.Module, zPath uint32, flags O
if stack[0] == 0 {
return params
}
key := util.ReadString(mod, uint32(stack[0]), _MAX_STRING)
key := util.ReadString(mod, uint32(stack[0]), _MAX_NAME)
if params.Has(key) {
continue
}
@@ -384,7 +384,7 @@ func vfsURIParameters(ctx context.Context, mod api.Module, zPath uint32, flags O
if params == nil {
params = url.Values{}
}
params.Set(key, util.ReadString(mod, uint32(stack[0]), _MAX_STRING))
params.Set(key, util.ReadString(mod, uint32(stack[0]), _MAX_NAME))
}
}
@@ -392,7 +392,7 @@ func vfsGet(mod api.Module, pVfs uint32) VFS {
var name string
if pVfs != 0 {
const zNameOffset = 16
name = util.ReadString(mod, util.ReadUint32(mod, pVfs+zNameOffset), _MAX_STRING)
name = util.ReadString(mod, util.ReadUint32(mod, pVfs+zNameOffset), _MAX_NAME)
}
if vfs := Find(name); vfs != nil {
return vfs