DragonFly On-Line Manual Pages
DIRNAME(3) DragonFly Library Functions Manual DIRNAME(3)
dirname - extract the directory part of a pathname
Standard C Library (libc, -lc)
The dirname() function is the converse of basename(3); it returns a
pointer to the parent directory of the pathname pointed to by path. Any
trailing `/' characters are not counted as part of the directory name.
If path is a null pointer, the empty string, or contains no `/'
characters, dirname() returns a pointer to the string ".", signifying the
On successful completion, dirname() returns a pointer to the parent
directory of path.
If dirname() fails, a null pointer is returned and the global variable
errno is set to indicate the error.
The following error codes may be set in errno:
[ENAMETOOLONG] The path component to be returned was larger than
Other vendor implementations of dirname() may modify the contents of the
string passed to dirname(); this should be taken into account when
writing code which calls this function if portability is desired.
basename(1), dirname(1), basename(3)
The dirname() function conforms to X/Open Portability Guide Issue 4,
Version 2 ("XPG4.2").
The dirname() function first appeared in OpenBSD 2.2 and FreeBSD 4.2.
Todd C. Miller <Todd.Miller@courtesan.com>
DragonFly 5.7-DEVELOPMENT January 4, 2020 DragonFly 5.7-DEVELOPMENT