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BASENAME(3) BSD 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 re- turned. 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. basename_r() is therefore preferred for threaded applications. 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. BSD March 31, 2010 BSD
NAME | SYNOPSIS | DESCRIPTION | IMPLEMENTATION NOTES | RETURN VALUES | ERRORS | SEE ALSO | STANDARDS | HISTORY | AUTHORS | CAVEATS
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