diff options
Diffstat (limited to 'libc')
| -rw-r--r-- | libc/sysdeps/linux/common/Makefile.in | 3 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/bits/kernel-features.h | 8 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/posix_fallocate.c | 43 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/posix_fallocate64.c | 39 |
4 files changed, 92 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/common/Makefile.in b/libc/sysdeps/linux/common/Makefile.in index 566722d44..29566dd98 100644 --- a/libc/sysdeps/linux/common/Makefile.in +++ b/libc/sysdeps/linux/common/Makefile.in @@ -82,7 +82,8 @@ CSRC-$(UCLIBC_HAS_REALTIME) += clock_getres.c clock_gettime.c clock_settime.c \ sched_get_priority_max.c sched_get_priority_min.c sched_getscheduler.c \ sched_rr_get_interval.c sched_setparam.c sched_setscheduler.c sigqueue.c # clock_getcpuclockid|clock_nanosleep|mq_timedreceive|mq_timedsend|posix_fadvise|posix_fallocate|posix_madvise|posix_memalign|posix_mem_offset|posix_spawnattr_destroy|posix_spawnattr_init|posix_spawnattr_getflags|posix_spawnattr_setflags|posix_spawnattr_getpgroup|posix_spawnattr_setpgroup|posix_spawnattr_getschedparam|posix_spawnattr_setschedparam|posix_spawnattr_getschedpolicy|posix_spawnattr_setschedpolicy|posix_spawnattr_getsigdefault|posix_spawnattr_setsigdefault|posix_spawnattr_getsigmask|posix_spawnattr_setsigmask|posix_spawnattr_init|posix_spawnattr_setflags|posix_spawnattr_setpgroup|posix_spawnattr_setschedparam|posix_spawnattr_setschedpolicy|posix_spawnattr_setsigdefault|posix_spawnattr_setsigmask|posix_spawn_file_actions_addclose|posix_spawn_file_actions_addopen|posix_spawn_file_actions_adddup2|posix_spawn_file_actions_addopen|posix_spawn_file_actions_destroy|posix_spawn_file_actions_init|posix_spawn_file_actions_init|posix_spawn|posix_spawnp|posix_spawnp|posix_typed_mem_get_info|pthread_mutex_timedlock|sem_timedwait -CSRC-$(UCLIBC_HAS_ADVANCED_REALTIME) += posix_fadvise64.c posix_fadvise.c posix_madvise.c +CSRC-$(UCLIBC_HAS_ADVANCED_REALTIME) += posix_fadvise64.c posix_fadvise.c posix_madvise.c \ + posix_fallocate.c posix_fallocate64.c CSRC-$(UCLIBC_SUSV4_LEGACY) += utime.c CSRC-$(UCLIBC_HAS_EPOLL) += epoll.c CSRC-$(UCLIBC_HAS_XATTR) += xattr.c diff --git a/libc/sysdeps/linux/common/bits/kernel-features.h b/libc/sysdeps/linux/common/bits/kernel-features.h index 4d1e0cbc3..6184c2b9d 100644 --- a/libc/sysdeps/linux/common/bits/kernel-features.h +++ b/libc/sysdeps/linux/common/bits/kernel-features.h @@ -495,6 +495,14 @@ # define __ASSUME_PRIVATE_FUTEX 1 #endif +/* Support for fallocate was added in 2.6.23, + on s390 only after 2.6.23-rc1, on alpha only after 2.6.33-rc1. */ +#if __LINUX_KERNEL_VERSION >= 0x020617 \ + && (!defined __s390__ || __LINUX_KERNEL_VERSION >= 0x020618) \ + && (!defined __alpha__ || __LINUX_KERNEL_VERSION >= 0x020621) +# define __ASSUME_FALLOCATE 1 +#endif + /* getcpu is a syscall for x86-64 since 3.1. */ #if defined __x86_64__ && __LINUX_KERNEL_VERSION >= 0x030100 # define __ASSUME_GETCPU_SYSCALL 1 diff --git a/libc/sysdeps/linux/common/posix_fallocate.c b/libc/sysdeps/linux/common/posix_fallocate.c new file mode 100644 index 000000000..9aaa6ce15 --- /dev/null +++ b/libc/sysdeps/linux/common/posix_fallocate.c @@ -0,0 +1,43 @@ +/* vi: set sw=4 ts=4: */ +/* + * posix_fallocate() for uClibc + * http://www.opengroup.org/onlinepubs/9699919799/functions/posix_fallocate.html + * + * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#include <sys/syscall.h> +#include <fcntl.h> +#include <bits/kernel-features.h> +#include <stdint.h> + +#if defined __NR_fallocate +int posix_fallocate(int fd, __off_t offset, __off_t len) +{ + int ret; + +# if __WORDSIZE == 32 + uint32_t off_low = offset; + uint32_t len_low = len; + /* may assert that these >>31 are 0 */ + uint32_t zero = 0; + INTERNAL_SYSCALL_DECL(err); + ret = (int) (INTERNAL_SYSCALL(fallocate, err, 6, fd, 0, + __LONG_LONG_PAIR (zero, off_low), + __LONG_LONG_PAIR (zero, len_low))); +# elif __WORDSIZE == 64 + INTERNAL_SYSCALL_DECL(err); + ret = (int) (INTERNAL_SYSCALL(fallocate, err, 4, fd, 0, offset, len)); +# else +# error your machine is neither 32 bit or 64 bit ... it must be magical +#endif + if (unlikely(INTERNAL_SYSCALL_ERROR_P (ret, err))) + return INTERNAL_SYSCALL_ERRNO (ret, err); + return 0; +} +# if defined __UCLIBC_HAS_LFS__ && __WORDSIZE == 64 +strong_alias(posix_fallocate,posix_fallocate64) +# endif +#endif diff --git a/libc/sysdeps/linux/common/posix_fallocate64.c b/libc/sysdeps/linux/common/posix_fallocate64.c new file mode 100644 index 000000000..818d86884 --- /dev/null +++ b/libc/sysdeps/linux/common/posix_fallocate64.c @@ -0,0 +1,39 @@ +/* vi: set sw=4 ts=4: */ +/* + * posix_fallocate() for uClibc + * http://www.opengroup.org/onlinepubs/9699919799/functions/posix_fallocate.html + * + * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#include <sys/syscall.h> +#include <fcntl.h> +#include <bits/kernel-features.h> +#include <stdint.h> + +#if defined __NR_fallocate + +# if __WORDSIZE == 64 +/* Can use normal posix_fallocate() */ +# elif __WORDSIZE == 32 +int posix_fallocate64(int fd, __off64_t offset, __off64_t len) +{ + int ret; + uint32_t off_low = offset & 0xffffffff; + uint32_t off_high = offset >> 32; + uint32_t len_low = len & 0xffffffff; + uint32_t len_high = len >> 32; + INTERNAL_SYSCALL_DECL(err); + ret = (int) (INTERNAL_SYSCALL(fallocate, err, 6, fd, 0, + __LONG_LONG_PAIR (off_high, off_low), + __LONG_LONG_PAIR (len_high, len_low))); + if (unlikely(INTERNAL_SYSCALL_ERROR_P (ret, err))) + return INTERNAL_SYSCALL_ERRNO (ret, err); + return 0; +} +# else +# error your machine is neither 32 bit or 64 bit ... it must be magical +# endif +#endif |