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Annotation of coherent/a/usr/include.b4ps2/fcntl.h, revision 1.1.1.1

1.1       root        1: /* (-lgl
                      2:  *     COHERENT Version 3.2.2
                      3:  *     Copyright (c) 1982, 1992 by Mark Williams Company.
                      4:  *     All rights reserved. May not be copied without permission.
                      5:  -lgl) */
                      6: /*
                      7:  * /usr/include/fcntl.h
                      8:  * Cf. Intel iBCS2, pp. 6-35, 6-36.
                      9:  */
                     10: 
                     11: #ifndef        _FCNTL_H
                     12: #define        _FCNTL_H
                     13: 
                     14: /*
                     15:  * Flag values accessible to open() and fcntl()
                     16:  * The first three can only be set by open().
                     17:  */
                     18: #define        O_RDONLY        0x00
                     19: #define        O_WRONLY        0x01
                     20: #define        O_RDWR          0x02
                     21: #define        O_NDELAY        0x04    /* non-blocking i/o                     */
                     22: #define        O_APPEND        0x08    /* append (writes guaranteed at the end */
                     23: 
                     24: #ifdef _I386
                     25: #define O_SYNC         0x10    /* sync on every write                  */
                     26: #define        O_NONBLOCK      0x80    /* non-blocking i/o                     */
                     27: 
                     28: /* Flag values accessible only to 3 argument open(). */
                     29: #define        O_CREAT         0x100   /* open with file create (third open arg) */
                     30: #define        O_TRUNC         0x200   /* open with truncation                 */
                     31: #define        O_EXCL          0x400   /* exclusive open                       */
                     32: #define O_NOCTTY       0x800   /* don't assign a controlling tty       */
                     33: 
                     34: #endif /* _I386 */
                     35: 
                     36: /* fcntl() requests. */
                     37: #define        F_DUPFD         0       /* duplicate file desriptor             */
                     38: #define        F_GETFD         1       /* get file descriptor flags            */
                     39: #define        F_SETFD         2       /* set file descriptor flags            */
                     40: #define        F_GETFL         3       /* get file flags                       */
                     41: #define        F_SETFL         4       /* set file flags                       */
                     42: #define        F_GETLK         5       /* return blocking lock                 */
                     43: #define        F_SETLK         6       /* set or remove lock, return if blocked */
                     44: #define        F_SETLKW        7       /* set or remove lock, sleep if blocked */
                     45: 
                     46: /* Locking command/return structure. */
                     47: typedef struct flock {
                     48:        short   l_type;         /* F_RDLCK, F_WRLCK, or F_UNLCK         */
                     49:        short   l_whence;       /* SEEK_SET, SEEK_CUR, SEEK_END         */
                     50:        long    l_start;        /* location                             */
                     51:        long    l_len;          /* 0 is through EOF                     */
                     52:        short   l_sysid;        /* system id of lock (for GETLK) ?      */
                     53:        short   l_pid;          /* process id of owner (for GETLK)      */
                     54: } FLOCK;
                     55: 
                     56: /* lock() command types. */
                     57: #define        F_RDLCK 1               /* read lock; more than 1 allowed       */
                     58: #define        F_WRLCK 2               /* write lock; blocks any lock          */
                     59: #define        F_UNLCK 3               /* unlock                               */
                     60: 
                     61: /* Close on exec bit for struct fd member f_flags2. */
                     62: #define        FD_CLOEXEC      1       /* close fd on exec                     */
                     63: 
                     64: #endif /* _FCNTL_H */
                     65: /* end of fcntl.h */

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