diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/mips/xstatconv.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/mips/xstatconv.c | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/mips/xstatconv.c b/sysdeps/unix/sysv/linux/mips/xstatconv.c new file mode 100644 index 0000000000..38819e19b0 --- /dev/null +++ b/sysdeps/unix/sysv/linux/mips/xstatconv.c @@ -0,0 +1,201 @@ +/* Convert between the kernel's `struct stat' format, and libc's. + Copyright (C) 1991-2014 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 <string.h> + +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; + memset (&buf->st_pad1, 0, sizeof (buf->st_pad1)); + buf->st_ino = kbuf->st_ino; + /* Check for overflow. */ + if (buf->st_ino != kbuf->st_ino) + { + __set_errno (EOVERFLOW); + return -1; + } + 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; + memset (&buf->st_pad2, 0, sizeof (buf->st_pad2)); + buf->st_size = kbuf->st_size; + /* Check for overflow. */ + if (buf->st_size != kbuf->st_size) + { + __set_errno (EOVERFLOW); + return -1; + } + buf->st_pad3 = 0; + buf->st_atim.tv_sec = kbuf->st_atime_sec; + buf->st_atim.tv_nsec = kbuf->st_atime_nsec; + buf->st_mtim.tv_sec = kbuf->st_mtime_sec; + buf->st_mtim.tv_nsec = kbuf->st_mtime_nsec; + buf->st_ctim.tv_sec = kbuf->st_ctime_sec; + buf->st_ctim.tv_nsec = kbuf->st_ctime_nsec; + buf->st_blksize = kbuf->st_blksize; + buf->st_blocks = kbuf->st_blocks; + /* Check for overflow. */ + if (buf->st_blocks != kbuf->st_blocks) + { + __set_errno (EOVERFLOW); + return -1; + } + memset (&buf->st_pad5, 0, sizeof (buf->st_pad5)); + } + break; + + default: + __set_errno (EINVAL); + return -1; + } + + return 0; +} + +int +__xstat64_conv (int vers, struct kernel_stat *kbuf, void *ubuf) +{ +#ifdef XSTAT_IS_XSTAT64 + return xstat_conv (vers, kbuf, ubuf); +#else + switch (vers) + { + case _STAT_VER_LINUX: + { + struct stat64 *buf = ubuf; + + buf->st_dev = kbuf->st_dev; + memset (&buf->st_pad1, 0, sizeof (buf->st_pad1)); + 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; + memset (&buf->st_pad2, 0, sizeof (buf->st_pad2)); + buf->st_pad3 = 0; + buf->st_size = kbuf->st_size; + buf->st_blksize = kbuf->st_blksize; + buf->st_blocks = kbuf->st_blocks; + + buf->st_atim.tv_sec = kbuf->st_atime_sec; + buf->st_atim.tv_nsec = kbuf->st_atime_nsec; + buf->st_mtim.tv_sec = kbuf->st_mtime_sec; + buf->st_mtim.tv_nsec = kbuf->st_mtime_nsec; + buf->st_ctim.tv_sec = kbuf->st_ctime_sec; + buf->st_ctim.tv_nsec = kbuf->st_ctime_nsec; + + memset (&buf->st_pad4, 0, sizeof (buf->st_pad4)); + } + break; + + /* If struct stat64 is different from struct stat then + _STAT_VER_KERNEL does not make sense. */ + case _STAT_VER_KERNEL: + default: + __set_errno (EINVAL); + return -1; + } + + return 0; +#endif +} + +#if _MIPS_SIM == _ABIO32 +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'. The layout of the fields in the kernel's + stat64 is the same as that in the user stat64; the only + difference is that the latter has more trailing padding. */ + buf->st_dev = kbuf->st_dev; + memset (&buf->st_pad1, 0, sizeof (buf->st_pad1)); + buf->st_ino = kbuf->st_ino; + /* Check for overflow. */ + if (buf->st_ino != kbuf->st_ino) + { + __set_errno (EOVERFLOW); + return -1; + } + 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; + memset (&buf->st_pad2, 0, sizeof (buf->st_pad2)); + buf->st_size = kbuf->st_size; + /* Check for overflow. */ + if (buf->st_size != kbuf->st_size) + { + __set_errno (EOVERFLOW); + return -1; + } + buf->st_pad3 = 0; + 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; + buf->st_blksize = kbuf->st_blksize; + buf->st_blocks = kbuf->st_blocks; + /* Check for overflow. */ + if (buf->st_blocks != kbuf->st_blocks) + { + __set_errno (EOVERFLOW); + return -1; + } + memset (&buf->st_pad5, 0, sizeof (buf->st_pad5)); + break; + + /* If struct stat64 is different from struct stat then + _STAT_VER_KERNEL does not make sense. */ + case _STAT_VER_KERNEL: + default: + __set_errno (EINVAL); + return -1; + } + + return 0; +} +#endif /* _MIPS_SIM == _ABIO32 */ |