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68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
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/* pthread_getname_np.
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Copyright (C) 2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <hurd.h>
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#include <mach_debug/mach_debug_types.h>
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#include <pthread.h>
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#include <pthreadP.h>
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#include <string.h>
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#include <pt-internal.h>
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int
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__pthread_getname_np (pthread_t thread, char *buf, size_t len)
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{
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#ifdef HAVE_MACH_THREAD_GET_NAME
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/* GNU Mach doesn't export this so we have to define it ourselves. */
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#define MACH_THREAD_NAME_MAX 32
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struct __pthread *pthread;
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error_t err;
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kernel_debug_name_t tmp;
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/* Note that we don't check for len to be MACH_THREAD_NAME_MAX
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* since we want to be more compatible with the Linux API which
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* requires that the buffer is at least 16 bytes long.
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*
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* We check for at least 1 byte since we truncate the result below. */
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if (len < 1)
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return ERANGE;
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if (len > MACH_THREAD_NAME_MAX)
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len = MACH_THREAD_NAME_MAX;
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/* Lookup the thread structure for THREAD. */
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pthread = __pthread_getid (thread);
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if (pthread == NULL)
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return ESRCH;
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/* __thread_get_name expects a buffer of size sizeof (kernel_debug_name_t)
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* and anything smaller will overflow. */
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err = __thread_get_name (pthread->kernel_thread, tmp);
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if (err != KERN_SUCCESS)
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return __hurd_fail (err);
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/* Truncate the source name to fit in the destination buffer. */
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tmp[len - 1] = '\0';
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memcpy (buf, tmp, len);
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return 0;
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#else
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return ENOTSUP;
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#endif
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}
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weak_alias (__pthread_getname_np, pthread_getname_np)
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