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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* Reentrant version of close system call. */ |
| 2 | |||
| 3 | #include |
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| 4 | #include |
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| 5 | #include <_syslist.h> |
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| 6 | #include |
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| 7 | |||
| 8 | /* Some targets provides their own versions of this functions. Those |
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| 9 | targets should define REENTRANT_SYSCALLS_PROVIDED in TARGET_CFLAGS. */ |
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| 10 | |||
| 11 | #ifdef _REENT_ONLY |
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| 12 | #ifndef REENTRANT_SYSCALLS_PROVIDED |
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| 13 | #define REENTRANT_SYSCALLS_PROVIDED |
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| 14 | #endif |
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| 15 | #endif |
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| 16 | |||
| 17 | #ifndef REENTRANT_SYSCALLS_PROVIDED |
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| 18 | |||
| 19 | |||
| 20 | /* |
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| 21 | FUNCTION |
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| 22 | <<_close_r>>---Reentrant version of close |
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| 23 | |||
| 24 | INDEX |
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| 25 | _close_r |
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| 26 | |||
| 27 | ANSI_SYNOPSIS |
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| 28 | #include |
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| 29 | int _close_r(struct _reent *<[ptr]>, int <[fd]>); |
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| 30 | |||
| 31 | TRAD_SYNOPSIS |
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| 32 | #include |
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| 33 | int _close_r(<[ptr]>, <[fd]>) |
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| 34 | struct _reent *<[ptr]>; |
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| 35 | int <[fd]>; |
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| 36 | |||
| 37 | DESCRIPTION |
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| 38 | This is a reentrant version of < |
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| 39 | takes a pointer to the global data block, which holds |
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| 40 | < |
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| 41 | */ |
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| 42 | extern unsigned __NFiles; |
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| 43 | |||
| 44 | |||
| 45 | #define __handle_check( __h, __r ) \ |
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| 46 | if( (__h) < 0 || (__h) > __NFiles ) { \ |
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| 47 | ptr->_errno = EBADF ; \ |
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| 48 | return( __r ); \ |
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| 49 | } |
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| 50 | |||
| 51 | |||
| 52 | |||
| 53 | |||
| 54 | int |
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| 55 | _DEFUN(_close_r, (ptr, fd), |
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| 56 | struct _reent *ptr _AND |
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| 57 | int fd) |
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| 58 | { |
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| 59 | int ret; |
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| 60 | int h; |
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| 61 | |||
| 62 | __file_handle *fh; |
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| 63 | |||
| 64 | __handle_check( fd, -1 ); |
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| 65 | |||
| 66 | fh = (__file_handle*) __getOSHandle( fd ); |
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| 67 | |||
| 68 | if( fd > STDERR_FILENO ) |
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| 69 | { |
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| 70 | _free_r(ptr, fh->name); |
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| 71 | _free_r(ptr, fh); |
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| 72 | __freePOSIXHandle( fd ); |
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| 73 | __SetIOMode_nogrow( fd, 0 ); |
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| 74 | } |
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| 75 | |||
| 76 | return 0; |
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| 77 | } |
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| 78 | |||
| 79 | |||
| 80 | int |
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| 81 | _DEFUN( close,(fd), |
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| 82 | int fd) |
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| 83 | { |
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| 84 | return _close_r(_REENT, fd); |
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| 85 | } |
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| 86 | |||
| 87 | #endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */ |