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d99a015343
Authored by: Chris Williamson <chris.williamson@delphix.com> Reviewed by: Matthew Ahrens <mahrens@delphix.com> Reviewed by: George Wilson <george.wilson@delphix.com> Reviewed by: John Kennedy <john.kennedy@delphix.com> Reviewed by: Dan Kimmel <dan.kimmel@delphix.com> Approved by: Garrett D'Amore <garrett@damore.org> Ported-by: Don Brady <don.brady@delphix.com> Ported-by: John Kennedy <john.kennedy@delphix.com> OpenZFS-issue: https://www.illumos.org/issues/7431 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/dfc11533 Porting Notes: * The CLI long option arguments for '-t' and '-m' don't parse on linux * Switched from kmem_alloc to vmem_alloc in zcp_lua_alloc * Lua implementation is built as its own module (zlua.ko) * Lua headers consumed directly by zfs code moved to 'include/sys/lua/' * There is no native setjmp/longjump available in stock Linux kernel. Brought over implementations from illumos and FreeBSD * The get_temporary_prop() was adapted due to VFS platform differences * Use of inline functions in lua parser to reduce stack usage per C call * Skip some ZFS Test Suite ZCP tests on sparc64 to avoid stack overflow
68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
/* BEGIN CSTYLED */
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/*
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** $Id: lzio.h,v 1.26.1.1 2013/04/12 18:48:47 roberto Exp $
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** Buffered streams
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** See Copyright Notice in lua.h
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*/
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#ifndef lzio_h
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#define lzio_h
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#include <sys/lua/lua.h>
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#include "lmem.h"
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#define EOZ (-1) /* end of stream */
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typedef struct Zio ZIO;
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#define zgetc(z) (((z)->n--)>0 ? cast_uchar(*(z)->p++) : luaZ_fill(z))
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typedef struct Mbuffer {
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char *buffer;
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size_t n;
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size_t buffsize;
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} Mbuffer;
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#define luaZ_initbuffer(L, buff) ((buff)->buffer = NULL, (buff)->buffsize = 0)
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#define luaZ_buffer(buff) ((buff)->buffer)
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#define luaZ_sizebuffer(buff) ((buff)->buffsize)
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#define luaZ_bufflen(buff) ((buff)->n)
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#define luaZ_resetbuffer(buff) ((buff)->n = 0)
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#define luaZ_resizebuffer(L, buff, size) \
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(luaM_reallocvector(L, (buff)->buffer, (buff)->buffsize, size, char), \
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(buff)->buffsize = size)
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#define luaZ_freebuffer(L, buff) luaZ_resizebuffer(L, buff, 0)
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LUAI_FUNC char *luaZ_openspace (lua_State *L, Mbuffer *buff, size_t n);
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LUAI_FUNC void luaZ_init (lua_State *L, ZIO *z, lua_Reader reader,
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void *data);
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LUAI_FUNC size_t luaZ_read (ZIO* z, void* b, size_t n); /* read next n bytes */
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/* --------- Private Part ------------------ */
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struct Zio {
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size_t n; /* bytes still unread */
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const char *p; /* current position in buffer */
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lua_Reader reader; /* reader function */
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void* data; /* additional data */
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lua_State *L; /* Lua state (for reader) */
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};
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LUAI_FUNC int luaZ_fill (ZIO *z);
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#endif
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/* END CSTYLED */
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