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Annotation of researchv10no/cmd/odist/pax/include/ftwalk.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * K. P. Vo
        !             3:  * AT&T Bell Laboratories
        !             4:  *
        !             5:  * ftwalk(3) interface definitions
        !             6:  */
        !             7: 
        !             8: #ifndef FTW_DOT
        !             9: 
        !            10: #ifndef VOID
        !            11: #define VOID   char
        !            12: #endif
        !            13: 
        !            14: /*
        !            15:  * ftwalk() argument flags
        !            16:  */
        !            17: 
        !            18: #define FTW_CHILDREN   (1<<0)  /* call user function on child dirs too */
        !            19: #define FTW_DELAY      (1<<1)  /* do child stat after parent preorder  */
        !            20: #define FTW_DOT                (1<<2)  /* don't chdir(2) to subdirectories     */
        !            21: #define FTW_MULTIPLE   (1<<3)  /* path arg is 0 terminated char** argv */
        !            22: #define FTW_PHYSICAL   (1<<4)  /* physical rather than logical walk    */
        !            23: #define FTW_POST       (1<<5)  /* visit descendants before parent      */
        !            24: #define FTW_TWICE      (1<<6)  /* visit parent before&after descendants*/
        !            25: 
        !            26: #define FTW_USER       (1<<10) /* first user flag bit                  */
        !            27: 
        !            28: struct FTW                     /* user function arg                    */
        !            29: {
        !            30:        struct FTW*     left;   /* left child in cycle check tree       */
        !            31:        struct FTW*     right;  /* right child in cycle check tree      */
        !            32:        struct FTW*     link;   /* identical to this elt on search path */
        !            33:        struct FTW*     parent; /* parent in current search path        */
        !            34:        union
        !            35:        {
        !            36:        long            number; /* local number                         */
        !            37:        char*           pointer;/* local pointer                        */
        !            38:        }               local;  /* local user data                      */
        !            39:        struct stat     statb;  /* stat buffer of this object           */
        !            40:        char*           path;   /* full pathname                        */
        !            41:        short           pathlen;/* strlen(path)                         */
        !            42:        unsigned short  info;   /* FTW_* type bits                      */
        !            43:        unsigned short  status; /* user function entry/return status    */
        !            44:        short           level;  /* current tree depth                   */
        !            45:        short           namelen;/* strlen(name)                         */
        !            46:        char            name[sizeof(int)];      /* file base name       */
        !            47: };
        !            48: 
        !            49: /*
        !            50:  * individual struct FTW size 
        !            51:  */
        !            52: 
        !            53: #define FTWSIZE(f)     ((f)->namelen+1+sizeof(struct FTW)-sizeof(int))
        !            54: 
        !            55: /*
        !            56:  * FTW.info type bits
        !            57:  */
        !            58: 
        !            59: #define        FTW_NS          (1<<0)  /* stat failed - unknown                */
        !            60: #define        FTW_F           (1<<1)  /* file - not directory or symbolic link*/
        !            61: #define FTW_SL         (1<<2)  /* symbolic link                        */
        !            62: #define        FTW_D           (1<<3)  /* directory - pre-order visit          */
        !            63: 
        !            64: #define FTW_C          (1<<4)  /* causes cycle                         */
        !            65: #define FTW_NR         (1<<5)  /* cannot read                          */
        !            66: #define FTW_NX         (1<<6)  /* cannot search                        */
        !            67: #define FTW_P          (1<<7)  /* post-order visit                     */
        !            68: 
        !            69: #define FTW_DC (FTW_D|FTW_C)   /* directory - would cause cycle        */
        !            70: #define        FTW_DNR (FTW_D|FTW_NR)  /* directory - no read permission       */
        !            71: #define        FTW_DNX (FTW_D|FTW_NX)  /* directory - no search permission     */
        !            72: #define        FTW_DP  (FTW_D|FTW_P)   /* directory - post-order visit         */
        !            73: 
        !            74: /*
        !            75:  * FTW.status entry values
        !            76:  */
        !            77: 
        !            78: #define FTW_NAME       (1<<0)  /* use FTW.name rather than FTW.path    */
        !            79: #define FTW_PATH       (1<<1)  /* use FTW.path rather than FTW.name    */
        !            80: 
        !            81: /*
        !            82:  * FTW.status return values
        !            83:  */
        !            84: 
        !            85: #define FTW_AGAIN      (1<<2)  /* process entry again                  */
        !            86: #define FTW_FOLLOW     (1<<3)  /* follow FTW_SL symlink                */
        !            87: #define FTW_NOPOST     (1<<4)  /* skip post order visit                */
        !            88: #define FTW_SKIP       (1<<5)  /* skip FTW_D directory                 */
        !            89: #define FTW_STAT       (1<<6)  /* userf did stat                       */
        !            90: 
        !            91: #if __STDC__ || __cplusplus || c_plusplus
        !            92: #if __cplusplus
        !            93: extern "C" {
        !            94: #endif
        !            95: extern int     ftwalk(const char* path, int (*userf)(struct FTW*), int flags, int (*comparf)(struct FTW*, struct FTW*));
        !            96: #if __cplusplus
        !            97: }
        !            98: #endif
        !            99: #else
        !           100: extern int     ftwalk();
        !           101: #endif
        !           102: 
        !           103: #endif

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