diff options
Diffstat (limited to 'REORG.TODO/sysdeps/unix/sysv/linux/xstatconv.c')
| -rw-r--r-- | REORG.TODO/sysdeps/unix/sysv/linux/xstatconv.c | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/xstatconv.c b/REORG.TODO/sysdeps/unix/sysv/linux/xstatconv.c new file mode 100644 index 0000000000..e307827b97 --- /dev/null +++ b/REORG.TODO/sysdeps/unix/sysv/linux/xstatconv.c @@ -0,0 +1,270 @@ +/* Convert between the kernel's `struct stat' format, and libc's. + Copyright (C) 1991-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <sys/stat.h> +#include <kernel_stat.h> +#include <kernel-features.h> + +#ifdef STAT_IS_KERNEL_STAT + +/* Dummy. */ +struct kernel_stat; + +#else + +#include <string.h> + + +#if XSTAT_IS_XSTAT64 +int +__xstat_conv (int vers, struct kernel_stat *kbuf, void *ubuf) +{ + switch (vers) + { + case _STAT_VER_KERNEL: + /* Nothing to do. The struct is in the form the kernel expects. + We should have short-circuted before we got here, but for + completeness... */ + *(struct kernel_stat *) ubuf = *kbuf; + break; + + case _STAT_VER_LINUX: + { + struct stat *buf = ubuf; + + /* Convert to current kernel version of `struct stat'. */ + buf->st_dev = kbuf->st_dev; +#ifdef _HAVE_STAT___PAD1 + buf->__pad1 = 0; +#endif + buf->st_ino = kbuf->st_ino; + buf->st_mode = kbuf->st_mode; + buf->st_nlink = kbuf->st_nlink; + buf->st_uid = kbuf->st_uid; + buf->st_gid = kbuf->st_gid; + buf->st_rdev = kbuf->st_rdev; +#ifdef _HAVE_STAT___PAD2 + buf->__pad2 = 0; +#endif + buf->st_size = kbuf->st_size; + buf->st_blksize = kbuf->st_blksize; + buf->st_blocks = kbuf->st_blocks; +#ifdef _HAVE_STAT_NSEC + buf->st_atim.tv_sec = kbuf->st_atim.tv_sec; + buf->st_atim.tv_nsec = kbuf->st_atim.tv_nsec; + buf->st_mtim.tv_sec = kbuf->st_mtim.tv_sec; + buf->st_mtim.tv_nsec = kbuf->st_mtim.tv_nsec; + buf->st_ctim.tv_sec = kbuf->st_ctim.tv_sec; + buf->st_ctim.tv_nsec = kbuf->st_ctim.tv_nsec; +#else + buf->st_atime = kbuf->st_atime; + buf->st_mtime = kbuf->st_mtime; + buf->st_ctime = kbuf->st_ctime; +#endif +#ifdef _HAVE_STAT___UNUSED1 + buf->__glibc_reserved1 = 0; +#endif +#ifdef _HAVE_STAT___UNUSED2 + buf->__glibc_reserved2 = 0; +#endif +#ifdef _HAVE_STAT___UNUSED3 + buf->__glibc_reserved3 = 0; +#endif +#ifdef _HAVE_STAT___UNUSED4 + buf->__glibc_reserved4 = 0; +#endif +#ifdef _HAVE_STAT___UNUSED5 + buf->__glibc_reserved5 = 0; +#endif + } + break; + + default: + return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); + } + + return 0; +} +#endif + +int +__xstat64_conv (int vers, struct kernel_stat *kbuf, void *ubuf) +{ +#if XSTAT_IS_XSTAT64 + return __xstat_conv (vers, kbuf, ubuf); +#else + switch (vers) + { + case _STAT_VER_LINUX: + { + struct stat64 *buf = ubuf; + + /* Convert to current kernel version of `struct stat64'. */ + buf->st_dev = kbuf->st_dev; +#ifdef _HAVE_STAT64___PAD1 + buf->__pad1 = 0; +#endif + buf->st_ino = kbuf->st_ino; +#ifdef _HAVE_STAT64___ST_INO + buf->__st_ino = kbuf->st_ino; +#endif + buf->st_mode = kbuf->st_mode; + buf->st_nlink = kbuf->st_nlink; + buf->st_uid = kbuf->st_uid; + buf->st_gid = kbuf->st_gid; + buf->st_rdev = kbuf->st_rdev; +#ifdef _HAVE_STAT64___PAD2 + buf->__pad2 = 0; +#endif + buf->st_size = kbuf->st_size; + buf->st_blksize = kbuf->st_blksize; + buf->st_blocks = kbuf->st_blocks; +#ifdef _HAVE_STAT64_NSEC + buf->st_atim.tv_sec = kbuf->st_atim.tv_sec; + buf->st_atim.tv_nsec = kbuf->st_atim.tv_nsec; + buf->st_mtim.tv_sec = kbuf->st_mtim.tv_sec; + buf->st_mtim.tv_nsec = kbuf->st_mtim.tv_nsec; + buf->st_ctim.tv_sec = kbuf->st_ctim.tv_sec; + buf->st_ctim.tv_nsec = kbuf->st_ctim.tv_nsec; +#else + buf->st_atime = kbuf->st_atime; + buf->st_mtime = kbuf->st_mtime; + buf->st_ctime = kbuf->st_ctime; +#endif +#ifdef _HAVE_STAT64___UNUSED1 + buf->__glibc_reserved1 = 0; +#endif +#ifdef _HAVE_STAT64___UNUSED2 + buf->__glibc_reserved2 = 0; +#endif +#ifdef _HAVE_STAT64___UNUSED3 + buf->__glibc_reserved3 = 0; +#endif +#ifdef _HAVE_STAT64___UNUSED4 + buf->__glibc_reserved4 = 0; +#endif +#ifdef _HAVE_STAT64___UNUSED5 + buf->__glibc_reserved5 = 0; +#endif + } + break; + + /* If struct stat64 is different from struct stat then + _STAT_VER_KERNEL does not make sense. */ + case _STAT_VER_KERNEL: + default: + return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); + } + + return 0; +#endif +} + +int +__xstat32_conv (int vers, struct stat64 *kbuf, struct stat *buf) +{ + switch (vers) + { + case _STAT_VER_LINUX: + { + /* Convert current kernel version of `struct stat64' to + `struct stat'. */ + buf->st_dev = kbuf->st_dev; +#ifdef _HAVE_STAT___PAD1 + buf->__pad1 = 0; +#endif +#ifdef _HAVE_STAT64___ST_INO +# if !__ASSUME_ST_INO_64_BIT + if (kbuf->st_ino == 0) + buf->st_ino = kbuf->__st_ino; + else +# endif + { + buf->st_ino = kbuf->st_ino; + if (sizeof (buf->st_ino) != sizeof (kbuf->st_ino) + && buf->st_ino != kbuf->st_ino) + return INLINE_SYSCALL_ERROR_RETURN_VALUE (EOVERFLOW); + } +#else + buf->st_ino = kbuf->st_ino; + if (sizeof (buf->st_ino) != sizeof (kbuf->st_ino) + && buf->st_ino != kbuf->st_ino) + return INLINE_SYSCALL_ERROR_RETURN_VALUE (EOVERFLOW); +#endif + buf->st_mode = kbuf->st_mode; + buf->st_nlink = kbuf->st_nlink; + buf->st_uid = kbuf->st_uid; + buf->st_gid = kbuf->st_gid; + buf->st_rdev = kbuf->st_rdev; +#ifdef _HAVE_STAT___PAD2 + buf->__pad2 = 0; +#endif + buf->st_size = kbuf->st_size; + /* Check for overflow. */ + if (sizeof (buf->st_size) != sizeof (kbuf->st_size) + && buf->st_size != kbuf->st_size) + return INLINE_SYSCALL_ERROR_RETURN_VALUE (EOVERFLOW); + buf->st_blksize = kbuf->st_blksize; + buf->st_blocks = kbuf->st_blocks; + /* Check for overflow. */ + if (sizeof (buf->st_blocks) != sizeof (kbuf->st_blocks) + && buf->st_blocks != kbuf->st_blocks) + return INLINE_SYSCALL_ERROR_RETURN_VALUE (EOVERFLOW); +#ifdef _HAVE_STAT_NSEC + buf->st_atim.tv_sec = kbuf->st_atim.tv_sec; + buf->st_atim.tv_nsec = kbuf->st_atim.tv_nsec; + buf->st_mtim.tv_sec = kbuf->st_mtim.tv_sec; + buf->st_mtim.tv_nsec = kbuf->st_mtim.tv_nsec; + buf->st_ctim.tv_sec = kbuf->st_ctim.tv_sec; + buf->st_ctim.tv_nsec = kbuf->st_ctim.tv_nsec; +#else + buf->st_atime = kbuf->st_atime; + buf->st_mtime = kbuf->st_mtime; + buf->st_ctime = kbuf->st_ctime; +#endif + +#ifdef _HAVE_STAT___UNUSED1 + buf->__glibc_reserved1 = 0; +#endif +#ifdef _HAVE_STAT___UNUSED2 + buf->__glibc_reserved2 = 0; +#endif +#ifdef _HAVE_STAT___UNUSED3 + buf->__glibc_reserved3 = 0; +#endif +#ifdef _HAVE_STAT___UNUSED4 + buf->__glibc_reserved4 = 0; +#endif +#ifdef _HAVE_STAT___UNUSED5 + buf->__glibc_reserved5 = 0; +#endif + } + break; + + /* If struct stat64 is different from struct stat then + _STAT_VER_KERNEL does not make sense. */ + case _STAT_VER_KERNEL: + default: + return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); + } + + return 0; +} + +#endif |