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- TRUNCATE C Library Procedures TRUNCATE
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- NNAAMMEE
- truncate - truncate a file to a specified length
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- SSYYNNOOPPSSIISS
- ttrruunnccaattee((ppaatthh,, lleennggtthh))
- cchhaarr **ppaatthh;;
- ooffff__tt lleennggtthh;;
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- ffttrruunnccaattee((ffdd,, lleennggtthh))
- iinntt ffdd;;
- ooffff__tt lleennggtthh;;
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- DDEESSCCRRIIPPTTIIOONN
- _T_r_u_n_c_a_t_e causes the file named by _p_a_t_h or referenced by _f_d
- to be truncated to at most _l_e_n_g_t_h bytes in size. If the
- file previously was larger than this size, the extra data is
- lost. With _f_t_r_u_n_c_a_t_e, the file must be open for writing.
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- RREETTUURRNN VVAALLUUEESS
- A value of 0 is returned if the call succeeds. If the call
- fails a -1 is returned, and the global variable _e_r_r_n_o speci-
- fies the error.
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- EERRRROORRSS
- _T_r_u_n_c_a_t_e succeeds unless:
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- [ENOTDIR] A component of the path prefix is not a
- directory.
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- [EINVAL] The pathname contains a character with the
- high-order bit set.
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- [ENAMETOOLONG] A component of a pathname exceeded 255 char-
- acters, or an entire path name exceeded 1023
- characters.
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- [ENOENT] The named file does not exist.
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- [EACCES] Search permission is denied for a component
- of the path prefix.
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- [EACCES] The named file is not writable by the user.
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- [ELOOP] Too many symbolic links were encountered in
- translating the pathname.
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- [EISDIR] The named file is a directory.
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- [EROFS] The named file resides on a read-only file
- system.
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- [ETXTBSY] The file is a pure procedure (shared text)
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- Sprite v1.0 March 29, 1986 1
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- TRUNCATE C Library Procedures TRUNCATE
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- file that is being executed.
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- [EIO] An I/O error occurred updating the inode.
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- [EFAULT] _P_a_t_h points outside the process's allocated
- address space.
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- _F_t_r_u_n_c_a_t_e succeeds unless:
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- [EBADF] The _f_d is not a valid descriptor.
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- [EINVAL] The _f_d references a socket, not a file.
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- [EINVAL] The _f_d is not open for writing.
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- SSEEEE AALLSSOO
- open(2)
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- BBUUGGSS
- These calls should be generalized to allow ranges of bytes
- in a file to be discarded.
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- Sprite v1.0 March 29, 1986 2
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