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src/memfd_create.c
66 строк
2 KB
Dmitry V. Levin
Update copyright headers
05 авг 2025, 11:00
05 авг 2025, 11:00
7db24b3
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/* * Copyright (c) 2015 Dmitry V. Levin <ldv@strace.io> * Copyright (c) 2015-2025 The strace developers. * All rights reserved. * * SPDX-License-Identifier: LGPL-2.1-or-later */ #include "defs.h" #include <linux/memfd.h> #include "xlat/memfd_create_flags.h" #ifndef MFD_NAME_MAX_LEN # define MFD_NAME_MAX_LEN (255 - (sizeof("memfd:") - 1)) #endif SYS_FUNC(memfd_create) { /* name */ tprints_arg_name("name"); printstr_ex(tcp, tcp->u_arg[0], MFD_NAME_MAX_LEN + 1, QUOTE_0_TERMINATED); tprints_arg_next_name("flags"); unsigned int flags = tcp->u_arg[1]; if (!flags || xlat_verbose(xlat_verbosity) != XLAT_STYLE_ABBREV) PRINT_VAL_X(flags); if (!flags || xlat_verbose(xlat_verbosity) == XLAT_STYLE_RAW) return RVAL_DECODED | RVAL_FD; if (xlat_verbose(xlat_verbosity) == XLAT_STYLE_VERBOSE) tprint_comment_begin(); const unsigned int mask = MFD_HUGE_MASK << MFD_HUGE_SHIFT; const unsigned int hugetlb_value = flags & mask; flags &= ~mask; tprint_flags_begin(); if (flags || !hugetlb_value) printflags_ex(flags, "MFD_???", XLAT_STYLE_ABBREV, memfd_create_flags, NULL); if (hugetlb_value) { if (flags) tprint_flags_or(); tprint_shift_begin(); PRINT_VAL_U(hugetlb_value >> MFD_HUGE_SHIFT); tprint_shift(); /* * print_xlat_u is not used here because the whole thing * is potentially inside a comment already. */ tprints_string("MFD_HUGE_SHIFT"); tprint_shift_end(); } tprint_flags_end(); if (xlat_verbose(xlat_verbosity) == XLAT_STYLE_VERBOSE) tprint_comment_end(); return RVAL_DECODED | RVAL_FD; }