linux-master/fs/read_write.c

113 		 * In the generic case the entire file is data, so as long as
116 		if ((unsigned long long)offset >= eof)
121 		 * There is a virtual hole at the end of the file, so as long as
124 		if ((unsigned long long)offset >= eof)
250 			 * long as offset isn't at the end of the file then the
261 			 * as long as offset isn't i_size or larger, return
325 SYSCALL_DEFINE5(llseek, unsigned int, fd, unsigned long, offset_high,
326 		unsigned long, offset_low, loff_t __user *, result,
905 			 unsigned long vlen, loff_t *pos, rwf_t flags)
943 			  unsigned long vlen, loff_t *pos, rwf_t flags)
982 static ssize_t do_readv(unsigned long fd, const struct iovec __user *vec,
983 			unsigned long vlen, rwf_t flags)
1006 static ssize_t do_writev(unsigned long fd, const struct iovec __user *vec,
1007 			 unsigned long vlen, rwf_t flags)
1030 static inline loff_t pos_from_hilo(unsigned long high, unsigned long low)
1036 static ssize_t do_preadv(unsigned long fd, const struct iovec __user *vec,
1037 			 unsigned long vlen, loff_t pos, rwf_t flags)
1059 static ssize_t do_pwritev(unsigned long fd, const struct iovec __user *vec,
1060 			  unsigned long vlen, loff_t pos, rwf_t flags)
1082 SYSCALL_DEFINE3(readv, unsigned long, fd, const struct iovec __user *, vec,
1083 		unsigned long, vlen)
1088 SYSCALL_DEFINE3(writev, unsigned long, fd, const struct iovec __user *, vec,
1089 		unsigned long, vlen)
1094 SYSCALL_DEFINE5(preadv, unsigned long, fd, const struct iovec __user *, vec,
1095 		unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h)
1102 SYSCALL_DEFINE6(preadv2, unsigned long, fd, const struct iovec __user *, vec,
1103 		unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h,
1114 SYSCALL_DEFINE5(pwritev, unsigned long, fd, const struct iovec __user *, vec,
1115 		unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h)
1122 SYSCALL_DEFINE6(pwritev2, unsigned long, fd, const struct iovec __user *, vec,
1123 		unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h,
1141 COMPAT_SYSCALL_DEFINE4(preadv64, unsigned long, fd,
1143 		unsigned long, vlen, loff_t, pos)
1159 COMPAT_SYSCALL_DEFINE5(preadv64v2, unsigned long, fd,
1161 		unsigned long, vlen, loff_t, pos, rwf_t, flags)
1182 COMPAT_SYSCALL_DEFINE4(pwritev64, unsigned long, fd,
1184 		unsigned long, vlen, loff_t, pos)
1200 COMPAT_SYSCALL_DEFINE5(pwritev64v2, unsigned long, fd,
1202 		unsigned long, vlen, loff_t, pos, rwf_t, flags)