From f7ec7c1a5ea7d921d94f0ca2552374741a325ce9 Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Wed, 25 Feb 2015 16:14:03 -0800 Subject: Implement getcwd. --- sysdeps/nacl/getcwd.c | 56 ++++++++++++++++++++++++++++++++++++++ sysdeps/nacl/nacl-interface-list.h | 2 ++ 2 files changed, 58 insertions(+) create mode 100644 sysdeps/nacl/getcwd.c diff --git a/sysdeps/nacl/getcwd.c b/sysdeps/nacl/getcwd.c new file mode 100644 index 0000000000..ba7e49a036 --- /dev/null +++ b/sysdeps/nacl/getcwd.c @@ -0,0 +1,56 @@ +/* Get current working directory. NaCl version. + Copyright (C) 2015 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include +#include +#include +#include + +/* Get the pathname of the current working directory, + and put it in SIZE bytes of BUF. Returns NULL if the + directory couldn't be determined or SIZE was too small. + If successful, returns BUF. In GNU, if BUF is NULL, + an array is allocated with `malloc'; the array is SIZE + bytes long, unless SIZE <= 0, in which case it is as + big as necessary. */ +char * +__getcwd (char *buf, size_t size) +{ + char *use_buf = buf; + + if (buf == NULL) + { + if (size == 0) + size = PATH_MAX; + use_buf = malloc (size); + if (__glibc_unlikely (use_buf == NULL)) + return NULL; + } + + int error = __nacl_irt_dev_filename.getcwd (use_buf, size); + if (__glibc_unlikely (error)) + { + if (use_buf != buf) + free (use_buf); + errno = error; + return NULL; + } + + return use_buf; +} +weak_alias (__getcwd, getcwd) diff --git a/sysdeps/nacl/nacl-interface-list.h b/sysdeps/nacl/nacl-interface-list.h index a13bb20aac..2ead2a6725 100644 --- a/sysdeps/nacl/nacl-interface-list.h +++ b/sysdeps/nacl/nacl-interface-list.h @@ -23,3 +23,5 @@ NACL_OPTIONAL_INTERFACE (rtld, NACL_IRT_DYNCODE_v0_1, nacl_irt_dyncode) NACL_OPTIONAL_INTERFACE (rtld, NACL_IRT_DEV_GETPID_v0_1, nacl_irt_dev_getpid) +NACL_OPTIONAL_INTERFACE (rtld, + NACL_IRT_DEV_FILENAME_v0_3, nacl_irt_dev_filename) -- cgit 1.4.1