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pathname.h
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C/C++ Source or Header
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1993-10-19
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2KB
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45 lines
/* @(#)pathname.h 2.2 88/05/25 NFSSRC4.0 from 2.6 86/07/16 SMI */
/*
* HISTORY
* 27-Sep-89 Morris Meyer (mmeyer) at NeXT
* NFS 4.0 Changes: Addtional path manipulation routines.
*/
/*
* Pathname structure.
* System calls which operate on path names gather the
* pathname from system call into this structure and reduce
* it by peeling off translated components. If a symbolic
* link is encountered the new pathname to be translated
* is also assembled in this structure.
*/
struct pathname {
char *pn_buf; /* underlying storage */
char *pn_path; /* remaining pathname */
u_int pn_pathlen; /* remaining length */
};
#define PN_STRIP 0x00 /* Strip next component off pn */
#define PN_PEEK 0x01 /* Only peek at next pn component */
#define pn_peekcomponent(PNP, COMP) pn_getcomponent(PNP, COMP, PN_PEEK)
#define pn_stripcomponent(PNP, COMP) pn_getcomponent(PNP, COMP, PN_STRIP)
#define pn_peekchar(PNP) ((PNP)->pn_pathlen>0?*((PNP)->pn_path):0)
#define pn_pathleft(PNP) ((PNP)->pn_pathlen)
#define pn_getpath(PNP) ((PNP)->pn_path)
#define pn_copy(PNP1, PNP2) (pn_set(PNP2, pn_getpath(PNP1)))
extern int pn_alloc(); /* allocat buffer for pathname */
extern int pn_get(); /* allocate buf and copy path into it */
#ifdef notneeded
extern int pn_getchar(); /* get next pathname char */
#endif
extern int pn_set(); /* set pathname to string */
extern int pn_combine(); /* combine to pathnames (for symlink) */
extern int pn_getcomponent(); /* get next component of pathname */
extern void pn_skipslash(); /* skip over slashes */
extern void pn_free(); /* free pathname buffer */
extern int pn_append(); /* Append string to pathname */
extern int pn_getlast(); /* Get last component of pathname */