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am 743a273e: am 1f21ece4: Merge "Clean up the <libgen.h> implementation a little, bring in tests."

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* commit '743a273e40e49c199d79462338fc606ae12c999f':
  Clean up the <libgen.h> implementation a little, bring in tests.
This commit is contained in:
Elliott Hughes
2012-10-30 10:11:44 -07:00
committed by Android Git Automerger
parent 7d617d0db9 743a273e40
commit c7358ee57c
8 changed files with 282 additions and 273 deletions
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5
libc/Android.mk
View File

@@ -149,16 +149,12 @@ libc_common_src_files := \
bionic/atoi.c \
bionic/atol.c \
bionic/atoll.c \
bionic/basename.c \
bionic/basename_r.c \
bionic/bindresvport.c \
bionic/bionic_clone.c \
bionic/brk.c \
bionic/clearenv.c \
bionic/cpuacct.c \
bionic/daemon.c \
bionic/dirname.c \
bionic/dirname_r.c \
bionic/err.c \
bionic/ether_aton.c \
bionic/ether_ntoa.c \
@@ -283,6 +279,7 @@ libc_bionic_src_files := \
bionic/eventfd.cpp \
bionic/__fgets_chk.cpp \
bionic/getcwd.cpp \
bionic/libgen.cpp \
bionic/__memcpy_chk.cpp \
bionic/__memmove_chk.cpp \
bionic/__memset_chk.cpp \

49
libc/bionic/basename.c
View File

@@ -1,49 +0,0 @@
/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#include <errno.h>
#include <libgen.h>
#include <stdlib.h>
#include <string.h>
#include <sys/param.h>
char*
basename(const char* path)
{
static char* bname = NULL;
int ret;
if (bname == NULL) {
bname = (char *)malloc(MAXPATHLEN);
if (bname == NULL)
return(NULL);
}
ret = basename_r(path, bname, MAXPATHLEN);
return (ret < 0) ? NULL : bname;
}

82
libc/bionic/basename_r.c
View File

@@ -1,82 +0,0 @@
/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <libgen.h>
#include <errno.h>
#include <string.h>
#include <sys/param.h>
int
basename_r(const char* path, char* buffer, size_t bufflen)
{
const char *endp, *startp;
int len, result;
char temp[2];
/* Empty or NULL string gets treated as "." */
if (path == NULL || *path == '\0') {
startp = ".";
len = 1;
goto Exit;
}
/* Strip trailing slashes */
endp = path + strlen(path) - 1;
while (endp > path && *endp == '/')
endp--;
/* All slashes becomes "/" */
if (endp == path && *endp == '/') {
startp = "/";
len = 1;
goto Exit;
}
/* Find the start of the base */
startp = endp;
while (startp > path && *(startp - 1) != '/')
startp--;
len = endp - startp +1;
Exit:
result = len;
if (buffer == NULL) {
return result;
}
if (len > (int)bufflen-1) {
len = (int)bufflen-1;
result = -1;
errno = ERANGE;
}
if (len >= 0) {
memcpy( buffer, startp, len );
buffer[len] = 0;
}
return result;
}

50
libc/bionic/dirname.c
View File

@@ -1,50 +0,0 @@
/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#include <errno.h>
#include <libgen.h>
#include <stdlib.h>
#include <string.h>
#include <sys/param.h>
char*
dirname(const char* path)
{
static char* bname = NULL;
int ret;
if (bname == NULL) {
bname = (char *)malloc(MAXPATHLEN);
if (bname == NULL)
return(NULL);
}
ret = dirname_r(path, bname, MAXPATHLEN);
return (ret < 0) ? NULL : bname;
}

88
libc/bionic/dirname_r.c
View File

@@ -1,88 +0,0 @@
/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <libgen.h>
#include <errno.h>
#include <string.h>
#include <sys/param.h>
int
dirname_r(const char* path, char* buffer, size_t bufflen)
{
const char *endp;
int result, len;
/* Empty or NULL string gets treated as "." */
if (path == NULL || *path == '\0') {
path = ".";
len = 1;
goto Exit;
}
/* Strip 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) {
path = (*endp == '/') ? "/" : ".";
len = 1;
goto Exit;
}
do {
endp--;
} while (endp > path && *endp == '/');
len = endp - path +1;
Exit:
result = len;
if (len+1 > MAXPATHLEN) {
errno = ENAMETOOLONG;
return -1;
}
if (buffer == NULL)
return result;
if (len > (int)bufflen-1) {
len = (int)bufflen-1;
result = -1;
errno = ERANGE;
}
if (len >= 0) {
memcpy( buffer, path, len );
buffer[len] = 0;
}
return result;
}

163
libc/bionic/libgen.cpp Normal file
View File

@@ -0,0 +1,163 @@
/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <libgen.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/cdefs.h>
#include <sys/param.h>
#include "ThreadLocalBuffer.h"
GLOBAL_INIT_THREAD_LOCAL_BUFFER(basename);
GLOBAL_INIT_THREAD_LOCAL_BUFFER(dirname);
char* basename(const char* path) {
LOCAL_INIT_THREAD_LOCAL_BUFFER(char*, basename, MAXPATHLEN);
int rc = basename_r(path, basename_tls_buffer, basename_tls_buffer_size);
return (rc < 0) ? NULL : basename_tls_buffer;
}
char* dirname(const char* path) {
LOCAL_INIT_THREAD_LOCAL_BUFFER(char*, dirname, MAXPATHLEN);
int rc = dirname_r(path, dirname_tls_buffer, dirname_tls_buffer_size);
return (rc < 0) ? NULL : dirname_tls_buffer;
}
int basename_r(const char* path, char* buffer, size_t buffer_size) {
const char* startp = NULL;
const char* endp = NULL;
int len;
int result;
// Empty or NULL string gets treated as ".".
if (path == NULL || *path == '\0') {
startp = ".";
len = 1;
goto Exit;
}
// Strip trailing slashes.
endp = path + strlen(path) - 1;
while (endp > path && *endp == '/') {
endp--;
}
// All slashes becomes "/".
if (endp == path && *endp == '/') {
startp = "/";
len = 1;
goto Exit;
}
// Find the start of the base.
startp = endp;
while (startp > path && *(startp - 1) != '/') {
startp--;
}
len = endp - startp +1;
Exit:
result = len;
if (buffer == NULL) {
return result;
}
if (len > static_cast<int>(buffer_size) - 1) {
len = buffer_size - 1;
result = -1;
errno = ERANGE;
}
if (len >= 0) {
memcpy(buffer, startp, len);
buffer[len] = 0;
}
return result;
}
int dirname_r(const char* path, char* buffer, size_t buffer_size) {
const char* endp = NULL;
int len;
int result;
// Empty or NULL string gets treated as ".".
if (path == NULL || *path == '\0') {
path = ".";
len = 1;
goto Exit;
}
// Strip 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) {
path = (*endp == '/') ? "/" : ".";
len = 1;
goto Exit;
}
do {
endp--;
} while (endp > path && *endp == '/');
len = endp - path + 1;
Exit:
result = len;
if (len + 1 > MAXPATHLEN) {
errno = ENAMETOOLONG;
return -1;
}
if (buffer == NULL) {
return result;
}
if (len > static_cast<int>(buffer_size) - 1) {
len = buffer_size - 1;
result = -1;
errno = ERANGE;
}
if (len >= 0) {
memcpy(buffer, path, len);
buffer[len] = 0;
}
return result;
}