当你遇到“call to undefined function readlink()”这样的错误时,通常意味着你的代码中调用了readlink()函数,但编译器或解释器在当前的上下文中无法识别这个函数。以下是一些可能的解决步骤和检查点: 确认readlink()函数的来源和用途: readlink()函数通常用于获取符号链接指向的实际文件路径。它在类Uni
The O_NOATIME, O_NOFOLLOW, and O_DIRECTORY flags are Linux-specific. One may have to define the _GNU_SOURCE macro to get their definitions.The (undefined) effect of O_RDONLY | O_TRUNC varies among implementations. On many systems the file is actually truncated. ...
It indicates to the subroutine being called that it is executing in a void context (if it executes wantarray the result will be the undefined value). 2. It ensures that nothing is actually returned from the subroutine. The value returned by the call_* function indicates how many items have...
NAME 0 - This is a modal window. No compatible source was found for this media. SYNOPSIS #include <signal.h> int killpg(intpgrp, intsig); DESCRIPTION killpg sig pgrp signal pgrp killpg (POSIX says: Ifpgrpis less than or equal to 1, the behaviour is undefined.) ...
The general idea is thatf_fsidcontains some random stuff such that the pair (f_fsid,ino) uniquely determines a file. Some OSes use (a variation on) the device number, or the device number combined with the filesystem type. Several OSes restrict giving out thef_fsidfield to the superuse...