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BASENAME(3) FreeBSD Library Functions Manual BASENAME(3) NAME basename -- extract the base portion of a pathname SYNOPSIS #include <libgen.h> char * basename(const char *path); char * basename_r(const char *path, char *bname); DESCRIPTION The basename() function returns the last component from the pathname pointed to by path, deleting any trailing `/' characters. If path con- sists entirely of `/' characters, a pointer to the string "/" is returned. If path is a null pointer or the empty string, a pointer to the string "." is returned. The basename_r() variation accepts a buffer of at least MAXPATHLEN bytes in which to store the resulting component. IMPLEMENTATION NOTES The basename() function returns a pointer to internal storage space allo- cated on the first call that will be overwritten by subsequent calls. Other vendor implementations of basename() may store their result in the input buffer, making it safe to use in multithreaded applications. Future versions of FreeBSD will follow this approach as well. basename_r() will then become obsolete. RETURN VALUES On successful completion, basename() and basename_r() return pointers to the last component of path. If they fail, a null pointer is returned and the global variable errno is set to indicate the error. ERRORS The following error codes may be set in errno: [ENAMETOOLONG] The path component to be returned was larger than MAXPATHLEN. SEE ALSO basename(1), dirname(1), dirname(3) STANDARDS The basename() function conforms to X/Open Portability Guide Issue 4, Version 2 (``XPG4.2''). HISTORY The basename() function first appeared in OpenBSD 2.2 and FreeBSD 4.2. AUTHORS Todd C. Miller CAVEATS basename() returns a pointer to internal static storage space that will be overwritten by subsequent calls. Other vendor implementations of basename() may modify the contents of the string passed to basename(); this should be taken into account when writ- ing code which calls this function if portability is desired. FreeBSD 11.1 July 29, 2016 FreeBSD 11.1
NAME | SYNOPSIS | DESCRIPTION | IMPLEMENTATION NOTES | RETURN VALUES | ERRORS | SEE ALSO | STANDARDS | HISTORY | AUTHORS | CAVEATS
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