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author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2020-07-15 18:05:52 +0000 |
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committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2020-09-11 14:35:24 -0300 |
commit | 5f85cc2f4712da0d8dd6f9ebf5f7c563e5b6ff3a (patch) | |
tree | 195d87fa01218b0ae52066d215ecbd1528e329ce /sysdeps/unix/sysv/linux/mips/mips32 | |
parent | 5febe6a38ff2f87bdb8dd971632c97c916eafd9a (diff) | |
download | glibc-5f85cc2f4712da0d8dd6f9ebf5f7c563e5b6ff3a.tar.gz glibc-5f85cc2f4712da0d8dd6f9ebf5f7c563e5b6ff3a.tar.xz glibc-5f85cc2f4712da0d8dd6f9ebf5f7c563e5b6ff3a.zip |
linux: Consolidate fxstatat{64}
The LFS support is implemented on fxstat64.c, instead of fxstat.c for 64-bit architectures. The fxstatat.c implements the non-LFS and it is a no-op for !XSTAT_IS_XSTAT64. The generic non-LFS implementation handles two cases: 1. New kABIs which uses generic pre 64-bit time Linux ABI (csky and nios): it issues __NR_fstatat64 plus handle the overflow on st_ino, st_size, or st_blocks. It only handles _STAT_VER_KERNEL. 2. Old kABIs with old non-LFS support (arm, i386, hppa, m68k, mips32, microblaze, s390, sh, powerpc, and sparc32). it issues __NR_fstatat64 and convert to non-LFS stat struct based on the version. Also non-LFS mips64 is an outlier and it has its own implementation since _STAT_VER_LINUX requires a different conversion function (it uses the kernel_stat as the sysissues argument since its exported ABI is different than the kernel one for both non-LFS and LFS implementation). The generic LFS implementation handles multiple cases: 1. XSTAT_IS_XSTAT64 being 1: 1.1. 64-bit kABI (aarch64, ia64, powerpc64*, s390x, riscv64, and x86_64): it issues __NR_newfstatat for _STAT_VER_KERNEL or _STAT_VER_LINUX. 1.2. 64-bit kABI outlier (sparc64): it issuess fstatat64 with a temporary stat64 and convert to output stat64 based on the input version (and using a sparc64 specific __xstat32_conv). 1.3. New 32-bit kABIs with only 64-bit time_t support (arc and riscv32): it issues __NR_statx and covert to struct stat64. 2. Old ABIs with XSTAT_IS_XSTAT64 being 0 (arm, csky, i386, hppa, m68k, microblaze, mips32, nios2, sh, powerpc32, and sparc32): it issues __NR_fstat64. Also, two special cases requires specific implementations: 1. alpha: it uses the __NR_fstatat64 syscall instead. 2. mips64: as for non-LFS implementation its ABIs differ from glibc exported one, which requires an specific conversion function to handle the kernel_stat. Checked with a build for all affected ABIs. I also checked on x86_64, i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x. Reviewed-by: Lukasz Majewski <lukma@denx.de>
Diffstat (limited to 'sysdeps/unix/sysv/linux/mips/mips32')
-rw-r--r-- | sysdeps/unix/sysv/linux/mips/mips32/fxstatat.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fxstatat.c b/sysdeps/unix/sysv/linux/mips/mips32/fxstatat.c deleted file mode 100644 index 0f8b3135d8..0000000000 --- a/sysdeps/unix/sysv/linux/mips/mips32/fxstatat.c +++ /dev/null @@ -1 +0,0 @@ -#include <sysdeps/unix/sysv/linux/i386/fxstatat.c> |