1explain_openat_or_die(3)   Library Functions Manual   explain_openat_or_die(3)
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NAME

6       explain_openat_or_die  -  open  a  file relative to a dir fd and report
7       errors
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SYNOPSIS

10       #include <libexplain/openat.h>
11       int explain_openat_or_die(int fildes, const char *pathname, int  flags,
12       mode_t mode);
13       int  explain_openat_on_error(int  fildes,  const  char  *pathname,  int
14       flags, mode_t mode);
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DESCRIPTION

17       The explain_openat_or_die function is used to call the openat(2) system
18       call.  On  failure  an  explanation will be printed to stderr, obtained
19       from the explain_openat(3) function, and then the process terminates by
20       calling exit(EXIT_FAILURE).
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22       The explain_openat_on_error function is used to call the openat(2) sys‐
23       tem call. On failure an explanation will be printed to stderr, obtained
24       from the explain_openat(3) function, but still returns to the caller.
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26       fildes  The  fildes,  exactly  as  to be passed to the openat(2) system
27               call.
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29       pathname
30               The pathname, exactly as to be passed to the  openat(2)  system
31               call.
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33       flags   The  flags,  exactly  as  to  be passed to the openat(2) system
34               call.
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36       mode    The mode, exactly as to be passed to the openat(2) system call.
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RETURN VALUE

39       The explain_openat_or_die function only returns on  success,  see  ope‐
40       nat(2)  for  more  information.  On  failure, prints an explanation and
41       exits, it does not return.
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43       The explain_openat_on_error function always returns the value return by
44       the wrapped openat(2) system call.
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EXAMPLE

47       The  explain_openat_or_die function is intended to be used in a fashion
48       similar to the following example:
49              int result = explain_openat_or_die(fildes, pathname, flags, mode);
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SEE ALSO

52       openat(2)
53               open a file relative to a directory file descriptor
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55       explain_openat(3)
56               explain openat(2) errors
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58       exit(2) terminate the calling process
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61       libexplain version 1.4
62       Copyright (C) 2013 Peter Miller
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66                                                      explain_openat_or_die(3)
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