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posix: implement confstr() #68599

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fea6c2c
posix: Implement confstr
moonlight83340 Feb 5, 2024
9fcf0e8
doc: posix: Update POSIX supported API documentation with confstr()
moonlight83340 Feb 5, 2024
d53bb34
posix: Implement tests for confstr
moonlight83340 Feb 5, 2024
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2 changes: 1 addition & 1 deletion doc/services/portability/posix/option_groups/index.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -163,7 +163,7 @@ process applications.
:header: API, Supported
:widths: 50,10

confstr(),
confstr(),yes
environ,
errno,yes
getenv(),
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23 changes: 23 additions & 0 deletions include/zephyr/posix/unistd.h
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Expand Up @@ -26,6 +26,29 @@
extern "C" {
#endif

/* confstr constantes */
enum {
_CS_PATH,
_CS_POSIX_V7_ILP32_OFF32_CFLAGS,
_CS_POSIX_V7_ILP32_OFF32_LDFLAGS,
_CS_POSIX_V7_ILP32_OFF32_LIBS,
_CS_POSIX_V7_ILP32_OFFBIG_CFLAGS,
_CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS,
_CS_POSIX_V7_ILP32_OFFBIG_LIBS,
_CS_POSIX_V7_LP64_OFF64_CFLAGS,
_CS_POSIX_V7_LP64_OFF64_LDFLAGS,
_CS_POSIX_V7_LP64_OFF64_LIBS,
_CS_POSIX_V7_LPBIG_OFFBIG_CFLAGS,
_CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS,
_CS_POSIX_V7_LPBIG_OFFBIG_LIBS,
_CS_POSIX_V7_THREADS_CFLAGS,
_CS_POSIX_V7_THREADS_LDFLAGS,
_CS_POSIX_V7_WIDTH_RESTRICTED_ENVS,
_CS_V7_ENV
};

size_t confstr(int name, char *buf, size_t len);

/* Version test macros */
#define _POSIX_VERSION 200809L
#define _POSIX2_VERSION (-1L)
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69 changes: 69 additions & 0 deletions lib/posix/options/confstr.c
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@@ -0,0 +1,69 @@
/*
* Copyright (c) 2024 Perrot Gaetan
*
* SPDX-License-Identifier: Apache-2.0
*/

#include <zephyr/posix/unistd.h>
#include <errno.h>

size_t confstr(int name, char *buf, size_t len)
{
switch (name) {
case _CS_PATH:
/* Implementation for _CS_PATH */
break;
case _CS_POSIX_V7_ILP32_OFF32_CFLAGS:
/* Implementation for _CS_POSIX_V7_ILP32_OFF32_CFLAGS */
break;
case _CS_POSIX_V7_ILP32_OFF32_LDFLAGS:
/* Implementation for _CS_POSIX_V7_ILP32_OFF32_LDFLAGS */
break;
case _CS_POSIX_V7_ILP32_OFF32_LIBS:
/* Implementation for _CS_POSIX_V7_ILP32_OFF32_LIBS */
break;
case _CS_POSIX_V7_ILP32_OFFBIG_CFLAGS:
/* Implementation for _CS_POSIX_V7_ILP32_OFFBIG_CFLAGS */
break;
case _CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS:
/* Implementation for _CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS */
break;
case _CS_POSIX_V7_ILP32_OFFBIG_LIBS:
/* Implementation for _CS_POSIX_V7_ILP32_OFFBIG_LIBS */
break;
case _CS_POSIX_V7_LP64_OFF64_CFLAGS:
/* Implementation for _CS_POSIX_V7_LP64_OFF64_CFLAGS */
break;
case _CS_POSIX_V7_LP64_OFF64_LDFLAGS:
/* Implementation for _CS_POSIX_V7_LP64_OFF64_LDFLAGS */
break;
case _CS_POSIX_V7_LP64_OFF64_LIBS:
/* Implementation for _CS_POSIX_V7_LP64_OFF64_LIBS */
break;
case _CS_POSIX_V7_LPBIG_OFFBIG_CFLAGS:
/* Implementation for _CS_POSIX_V7_LPBIG_OFFBIG_CFLAGS */
break;
case _CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS:
/* Implementation for _CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS */
break;
case _CS_POSIX_V7_LPBIG_OFFBIG_LIBS:
/* Implementation for _CS_POSIX_V7_LPBIG_OFFBIG_LIBS */
break;
case _CS_POSIX_V7_THREADS_CFLAGS:
/* Implementation for _CS_POSIX_V7_THREADS_CFLAGS */
break;
case _CS_POSIX_V7_THREADS_LDFLAGS:
/* Implementation for _CS_POSIX_V7_THREADS_LDFLAGS */
break;
case _CS_POSIX_V7_WIDTH_RESTRICTED_ENVS:
/* Implementation for _CS_POSIX_V7_WIDTH_RESTRICTED_ENVS */
break;
case _CS_V7_ENV:
/* Implementation for _CS_V7_ENV */
break;
default:
errno = EINVAL;
break;
}
return 0;
}
23 changes: 23 additions & 0 deletions tests/posix/common/src/confstr.c
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@@ -0,0 +1,23 @@
/*
* Copyright (c) 2024 Perrot Gaetan
*
* SPDX-License-Identifier: Apache-2.0
*/

#include <zephyr/ztest.h>
#include <zephyr/posix/unistd.h>
#include <errno.h>

ZTEST(posix_apis, test_posix_confstr)
{
size_t ret;
char *buf = NULL;

ret = confstr(_CS_PATH, buf, 0);
zassert_equal(ret, 0,"ztress_execute failed (ret: %d)", ret);
zassert_not_equal(errno, EINVAL);

ret = confstr(200, buf, 0);
zassert_equal(ret, 0);
zassert_equal(errno, EINVAL);
}
36 changes: 18 additions & 18 deletions tests/posix/headers/src/unistd_h.c
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Original file line number Diff line number Diff line change
Expand Up @@ -117,24 +117,24 @@ ZTEST(posix_headers, test_unistd_h)
/* zassert_not_equal(-1, W_OK); */ /* not implemented */
/* zassert_not_equal(-1, X_OK); */ /* not implemented */

/* zassert_not_equal(INT_MIN, _CS_PATH); */ /* not implemented */
zassert_not_equal(INT_MIN, _CS_PATH);

/* zassert_not_equal(INT_MIN, _CS_POSIX_V7_ILP32_OFF32_CFLAGS); */ /* not implemented */
/* zassert_not_equal(INT_MIN, _CS_POSIX_V7_ILP32_OFF32_LDFLAGS); */ /* not implemented */
/* zassert_not_equal(INT_MIN, _CS_POSIX_V7_ILP32_OFF32_LIBS); */ /* not implemented */
/* zassert_not_equal(INT_MIN, _CS_POSIX_V7_ILP32_OFFBIG_CFLAGS); */ /* not implemented */
/* zassert_not_equal(INT_MIN, _CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS); */ /* not implemented */
/* zassert_not_equal(INT_MIN, _CS_POSIX_V7_ILP32_OFFBIG_LIBS); */ /* not implemented */
/* zassert_not_equal(INT_MIN, _CS_POSIX_V7_LP64_OFF64_CFLAGS); */ /* not implemented */
/* zassert_not_equal(INT_MIN, _CS_POSIX_V7_LP64_OFF64_LDFLAGS); */ /* not implemented */
/* zassert_not_equal(INT_MIN, _CS_POSIX_V7_LP64_OFF64_LIBS); */ /* not implemented */
/* zassert_not_equal(INT_MIN, _CS_POSIX_V7_LPBIG_OFFBIG_CFLAGS); */ /* not implemented */
/* zassert_not_equal(INT_MIN, _CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS); */ /* not implemented */
/* zassert_not_equal(INT_MIN, _CS_POSIX_V7_LPBIG_OFFBIG_LIBS); */ /* not implemented */
/* zassert_not_equal(INT_MIN, _CS_POSIX_V7_THREADS_CFLAGS); */ /* not implemented */
/* zassert_not_equal(INT_MIN, _CS_POSIX_V7_THREADS_LDFLAGS); */ /* not implemented */
/* zassert_not_equal(INT_MIN, _CS_POSIX_V7_WIDTH_RESTRICTED_ENVS); */ /* not implemented */
/* zassert_not_equal(INT_MIN, _CS_V7_ENV); */ /* not implemented */
zassert_not_equal(INT_MIN, _CS_POSIX_V7_ILP32_OFF32_CFLAGS);
zassert_not_equal(INT_MIN, _CS_POSIX_V7_ILP32_OFF32_LDFLAGS);
zassert_not_equal(INT_MIN, _CS_POSIX_V7_ILP32_OFF32_LIBS);
zassert_not_equal(INT_MIN, _CS_POSIX_V7_ILP32_OFFBIG_CFLAGS);
zassert_not_equal(INT_MIN, _CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS);
zassert_not_equal(INT_MIN, _CS_POSIX_V7_ILP32_OFFBIG_LIBS);
zassert_not_equal(INT_MIN, _CS_POSIX_V7_LP64_OFF64_CFLAGS);
zassert_not_equal(INT_MIN, _CS_POSIX_V7_LP64_OFF64_LDFLAGS);
zassert_not_equal(INT_MIN, _CS_POSIX_V7_LP64_OFF64_LIBS);
zassert_not_equal(INT_MIN, _CS_POSIX_V7_LPBIG_OFFBIG_CFLAGS);
zassert_not_equal(INT_MIN, _CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS);
zassert_not_equal(INT_MIN, _CS_POSIX_V7_LPBIG_OFFBIG_LIBS);
zassert_not_equal(INT_MIN, _CS_POSIX_V7_THREADS_CFLAGS);
zassert_not_equal(INT_MIN, _CS_POSIX_V7_THREADS_LDFLAGS);
zassert_not_equal(INT_MIN, _CS_POSIX_V7_WIDTH_RESTRICTED_ENVS);
zassert_not_equal(INT_MIN, _CS_V7_ENV);

/* zassert_not_equal(-1, F_LOCK); */ /* not implemented */
/* zassert_not_equal(-1, F_TEST); */ /* not implemented */
Expand Down Expand Up @@ -308,7 +308,7 @@ ZTEST(posix_headers, test_unistd_h)
/* zassert_not_null(chdir); */ /* not implemented */
/* zassert_not_null(chown); */ /* not implemented */
zassert_not_null(close);
/* zassert_not_null(confstr); */ /* not implemented */
zassert_not_null(confstr);
/* zassert_not_null(crypt); */ /* not implemented */
/* zassert_not_null(dup); */ /* not implemented */
/* zassert_not_null(dup2); */ /* not implemented */
Expand Down