diff options
Diffstat (limited to 'src/fetch_struct_statfs.c')
| -rw-r--r-- | src/fetch_struct_statfs.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/src/fetch_struct_statfs.c b/src/fetch_struct_statfs.c new file mode 100644 index 000000000..cdb86798c --- /dev/null +++ b/src/fetch_struct_statfs.c @@ -0,0 +1,103 @@ +/* + * Copyright (c) 2014-2016 Dmitry V. Levin <ldv@strace.io> + * Copyright (c) 2016-2018 The strace developers. + * All rights reserved. + * + * SPDX-License-Identifier: LGPL-2.1-or-later + */ + +#include "defs.h" + +#include DEF_MPERS_TYPE(struct_statfs) +#include DEF_MPERS_TYPE(struct_statfs64) + +#include <linux/types.h> +#include <asm/statfs.h> +typedef struct statfs struct_statfs; +typedef struct statfs64 struct_statfs64; + +#include MPERS_DEFS + +#include "statfs.h" + +MPERS_PRINTER_DECL(bool, fetch_struct_statfs, + struct tcb *const tcp, const kernel_ulong_t addr, + struct strace_statfs *const p) +{ + struct_statfs b; + + if (umove_or_printaddr(tcp, addr, &b)) + return false; + + p->f_type = zero_extend_signed_to_ull(b.f_type); + p->f_bsize = zero_extend_signed_to_ull(b.f_bsize); + p->f_blocks = zero_extend_signed_to_ull(b.f_blocks); + p->f_bfree = zero_extend_signed_to_ull(b.f_bfree); + p->f_bavail = zero_extend_signed_to_ull(b.f_bavail); + p->f_files = zero_extend_signed_to_ull(b.f_files); + p->f_ffree = zero_extend_signed_to_ull(b.f_ffree); +#if defined HAVE_STRUCT_STATFS_F_FSID_VAL + p->f_fsid.val[0] = zero_extend_signed_to_ull(b.f_fsid.val[0]); + p->f_fsid.val[1] = zero_extend_signed_to_ull(b.f_fsid.val[1]); +#elif defined HAVE_STRUCT_STATFS_F_FSID___VAL + p->f_fsid.val[0] = zero_extend_signed_to_ull(b.f_fsid.__val[0]); + p->f_fsid.val[1] = zero_extend_signed_to_ull(b.f_fsid.__val[1]); +#endif + p->f_namelen = zero_extend_signed_to_ull(b.f_namelen); +#ifdef HAVE_STRUCT_STATFS_F_FRSIZE + p->f_frsize = zero_extend_signed_to_ull(b.f_frsize); +#endif +#ifdef HAVE_STRUCT_STATFS_F_FLAGS + p->f_flags = zero_extend_signed_to_ull(b.f_flags); +#endif + + return true; +} + +#if defined ARM || (defined AARCH64 && defined IN_MPERS) +/* See arch/arm/kernel/sys_oabi-compat.c for details. */ +# define COMPAT_STATFS64_PADDED_SIZE (sizeof(struct_statfs64) + 4) +#endif + +MPERS_PRINTER_DECL(bool, fetch_struct_statfs64, + struct tcb *const tcp, const kernel_ulong_t addr, + const kernel_ulong_t size, struct strace_statfs *const p) +{ + struct_statfs64 b; + + if (sizeof(b) != size +#ifdef COMPAT_STATFS64_PADDED_SIZE + && sizeof(b) != COMPAT_STATFS64_PADDED_SIZE +#endif + ) { + printaddr(addr); + return false; + } + + if (umove_or_printaddr(tcp, addr, &b)) + return false; + + p->f_type = zero_extend_signed_to_ull(b.f_type); + p->f_bsize = zero_extend_signed_to_ull(b.f_bsize); + p->f_blocks = zero_extend_signed_to_ull(b.f_blocks); + p->f_bfree = zero_extend_signed_to_ull(b.f_bfree); + p->f_bavail = zero_extend_signed_to_ull(b.f_bavail); + p->f_files = zero_extend_signed_to_ull(b.f_files); + p->f_ffree = zero_extend_signed_to_ull(b.f_ffree); +#if defined HAVE_STRUCT_STATFS64_F_FSID_VAL + p->f_fsid.val[0] = zero_extend_signed_to_ull(b.f_fsid.val[0]); + p->f_fsid.val[1] = zero_extend_signed_to_ull(b.f_fsid.val[1]); +#elif defined HAVE_STRUCT_STATFS64_F_FSID___VAL + p->f_fsid.val[0] = zero_extend_signed_to_ull(b.f_fsid.__val[0]); + p->f_fsid.val[1] = zero_extend_signed_to_ull(b.f_fsid.__val[1]); +#endif + p->f_namelen = zero_extend_signed_to_ull(b.f_namelen); +#ifdef HAVE_STRUCT_STATFS64_F_FRSIZE + p->f_frsize = zero_extend_signed_to_ull(b.f_frsize); +#endif +#ifdef HAVE_STRUCT_STATFS64_F_FLAGS + p->f_flags = zero_extend_signed_to_ull(b.f_flags); +#endif + + return true; +} |