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| explain_lseek_or_die(3) | FreeBSD Library Functions Manual | explain_lseek_or_die(3) |
NAME
explain_lseek_or_die - reposition file offset and report errorsSYNOPSIS
#include <libexplain/lseek.h> long long explain_lseek_or_die(int fildes, long long offset, int whence);DESCRIPTION
The explain_lseek_or_die function is used to call the lseek(2) system call. On failure an explanation will be printed to stderr, obtained from explain_lseek(3), and then the process terminates by calling exit(EXIT_FAILURE). This function is intended to be used in a fashion similar to the following example:long long result = explain_lseek_or_die(fildes, offset, whence);
- fildes
- The fildes, exactly as to be passed to the lseek(2) system call.
- offset
- The offset, exactly as to be passed to the lseek(2) system call.
- whence
- The whence, exactly as to be passed to the lseek(2) system call.
- Returns:
- On successful, returns the resulting offset location as measured in bytes from the beginning of the file. On failure, prints an explanation and exits.
SEE ALSO
- lseek(2)
- reposition file offset
- explain_lseek(3)
- explain lseek(2) errors
- exit(2)
- terminate the calling process
COPYRIGHT
libexplain version 1.3
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