/*
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/*
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Copyright 2007
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Copyright 2007
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International Business Machines Corporation,
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International Business Machines Corporation,
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Sony Computer Entertainment, Incorporated,
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Sony Computer Entertainment, Incorporated,
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Toshiba Corporation,
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Toshiba Corporation,
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All rights reserved.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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documentation and/or other materials provided with the distribution.
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* Neither the names of the copyright holders nor the names of their
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* Neither the names of the copyright holders nor the names of their
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contributors may be used to endorse or promote products derived from
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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*/
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#include <stdlib.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <unistd.h>
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#include <errno.h>
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#include <errno.h>
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#include "jsre.h"
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#include "jsre.h"
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#define ALLOC_BASE 64
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#define ALLOC_BASE 64
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#define ALLOC_INCR 64
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#define ALLOC_INCR 64
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typedef struct
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typedef struct
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{
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{
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unsigned int buf;
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unsigned int buf;
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unsigned int pad0[3];
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unsigned int pad0[3];
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unsigned int size;
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unsigned int size;
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unsigned int pad1[3];
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unsigned int pad1[3];
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} syscall_getcwd_t;
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} syscall_getcwd_t;
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char *
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char *
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getcwd (char *buf, size_t size)
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getcwd (char *buf, size_t size)
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{
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{
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syscall_getcwd_t sys;
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syscall_getcwd_t sys;
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int retry_alloc, local_alloc;
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int retry_alloc, local_alloc;
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char *newbuf;
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char *newbuf;
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char *res;
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char *res;
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/*
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/*
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* Do not let the ppu side allocate memory, since it has to be used on
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* Do not let the ppu side allocate memory, since it has to be used on
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* the SPU (must be in LS), and it can't easily be freed on the spu
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* the SPU (must be in LS), and it can't easily be freed on the spu
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* side. So check for NULL buf, handle allocations here, and only call
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* side. So check for NULL buf, handle allocations here, and only call
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* the assist call with a non-NULL buf.
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* the assist call with a non-NULL buf.
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*/
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*/
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retry_alloc = 0;
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retry_alloc = 0;
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local_alloc = 0;
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local_alloc = 0;
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if (!buf) {
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if (!buf) {
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local_alloc = 1;
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local_alloc = 1;
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if (size == 0) {
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if (size == 0) {
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retry_alloc = 1;
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retry_alloc = 1;
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size = ALLOC_BASE;
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size = ALLOC_BASE;
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}
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}
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buf = malloc (size);
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buf = malloc (size);
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if (!buf) {
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if (!buf) {
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/*
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/*
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* Leave errno as set by malloc.
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* Leave errno as set by malloc.
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*/
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*/
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return NULL;
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return NULL;
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}
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}
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}
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}
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/*
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/*
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* Let the assist call check for error cases, specifically let it handle
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* Let the assist call check for error cases, specifically let it handle
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* non-NULL buf and size of zero.
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* non-NULL buf and size of zero.
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*/
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*/
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sys.buf = (unsigned int) buf;
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sys.buf = (unsigned int) buf;
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sys.size = (unsigned int) size;
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sys.size = (unsigned int) size;
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res = (char*) __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_GETCWD, &sys);
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res = (char*) __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_GETCWD, &sys);
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while (!res && retry_alloc && errno == ERANGE) {
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while (!res && retry_alloc && errno == ERANGE) {
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size += ALLOC_INCR;
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size += ALLOC_INCR;
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newbuf = realloc (buf, size);
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newbuf = realloc (buf, size);
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if (!newbuf) {
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if (!newbuf) {
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free (buf);
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free (buf);
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return NULL;
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return NULL;
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}
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}
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buf = newbuf;
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buf = newbuf;
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sys.buf = (unsigned int) buf;
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sys.buf = (unsigned int) buf;
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sys.size = (unsigned int) size;
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sys.size = (unsigned int) size;
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res = (char*) __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_GETCWD, &sys);
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res = (char*) __send_to_ppe (JSRE_POSIX1_SIGNALCODE, JSRE_GETCWD, &sys);
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}
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}
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if (!res && local_alloc) {
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if (!res && local_alloc) {
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free (buf);
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free (buf);
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}
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}
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return res;
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return res;
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}
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}
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