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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:26:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:26:58 +0000 |
commit | 999ae6be3243c7b4a815247199447b53c39a3d65 (patch) | |
tree | 1f35b42b5e5f462d35ba452e4dcfa188ce0543fd /openbsd-compat/dirname.c | |
parent | Initial commit. (diff) | |
download | openssh-upstream.tar.xz openssh-upstream.zip |
Adding upstream version 1:7.9p1.upstream/1%7.9p1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'openbsd-compat/dirname.c')
-rw-r--r-- | openbsd-compat/dirname.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/openbsd-compat/dirname.c b/openbsd-compat/dirname.c new file mode 100644 index 0000000..30fcb49 --- /dev/null +++ b/openbsd-compat/dirname.c @@ -0,0 +1,72 @@ +/* $OpenBSD: dirname.c,v 1.13 2005/08/08 08:05:33 espie Exp $ */ + +/* + * Copyright (c) 1997, 2004 Todd C. Miller <Todd.Miller@courtesan.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/* OPENBSD ORIGINAL: lib/libc/gen/dirname.c */ + +#include "includes.h" +#ifndef HAVE_DIRNAME + +#include <errno.h> +#include <string.h> +#include <sys/param.h> + +char * +dirname(const char *path) +{ + static char dname[MAXPATHLEN]; + size_t len; + const char *endp; + + /* Empty or NULL string gets treated as "." */ + if (path == NULL || *path == '\0') { + dname[0] = '.'; + dname[1] = '\0'; + return (dname); + } + + /* Strip any trailing slashes */ + endp = path + strlen(path) - 1; + while (endp > path && *endp == '/') + endp--; + + /* Find the start of the dir */ + while (endp > path && *endp != '/') + endp--; + + /* Either the dir is "/" or there are no slashes */ + if (endp == path) { + dname[0] = *endp == '/' ? '/' : '.'; + dname[1] = '\0'; + return (dname); + } else { + /* Move forward past the separating slashes */ + do { + endp--; + } while (endp > path && *endp == '/'); + } + + len = endp - path + 1; + if (len >= sizeof(dname)) { + errno = ENAMETOOLONG; + return (NULL); + } + memcpy(dname, path, len); + dname[len] = '\0'; + return (dname); +} +#endif |