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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libiberty/getcwd.c | |
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Diffstat (limited to 'libiberty/getcwd.c')
-rw-r--r-- | libiberty/getcwd.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/libiberty/getcwd.c b/libiberty/getcwd.c new file mode 100644 index 000000000..28f26eb17 --- /dev/null +++ b/libiberty/getcwd.c @@ -0,0 +1,62 @@ +/* Emulate getcwd using getwd. + This function is in the public domain. */ + +/* + +@deftypefn Supplemental char* getcwd (char *@var{pathname}, int @var{len}) + +Copy the absolute pathname for the current working directory into +@var{pathname}, which is assumed to point to a buffer of at least +@var{len} bytes, and return a pointer to the buffer. If the current +directory's path doesn't fit in @var{len} characters, the result is +@code{NULL} and @code{errno} is set. If @var{pathname} is a null pointer, +@code{getcwd} will obtain @var{len} bytes of space using +@code{malloc}. + +@end deftypefn + +*/ + +#include "config.h" + +#ifdef HAVE_SYS_PARAM_H +#include <sys/param.h> +#endif +#include <errno.h> +#ifdef HAVE_STRING_H +#include <string.h> +#endif +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif + +extern char *getwd (); +extern int errno; + +#ifndef MAXPATHLEN +#define MAXPATHLEN 1024 +#endif + +char * +getcwd (char *buf, size_t len) +{ + char ourbuf[MAXPATHLEN]; + char *result; + + result = getwd (ourbuf); + if (result) { + if (strlen (ourbuf) >= len) { + errno = ERANGE; + return 0; + } + if (!buf) { + buf = (char*)malloc(len); + if (!buf) { + errno = ENOMEM; + return 0; + } + } + strcpy (buf, ourbuf); + } + return buf; +} |