diff options
Diffstat (limited to 'net/core/iovec.c')
-rw-r--r-- | net/core/iovec.c | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/net/core/iovec.c b/net/core/iovec.c index b61869429f4c..827dd6beb49c 100644 --- a/net/core/iovec.c +++ b/net/core/iovec.c | |||
@@ -75,61 +75,6 @@ int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr_storage *a | |||
75 | } | 75 | } |
76 | 76 | ||
77 | /* | 77 | /* |
78 | * Copy kernel to iovec. Returns -EFAULT on error. | ||
79 | */ | ||
80 | |||
81 | int memcpy_toiovecend(const struct iovec *iov, unsigned char *kdata, | ||
82 | int offset, int len) | ||
83 | { | ||
84 | int copy; | ||
85 | for (; len > 0; ++iov) { | ||
86 | /* Skip over the finished iovecs */ | ||
87 | if (unlikely(offset >= iov->iov_len)) { | ||
88 | offset -= iov->iov_len; | ||
89 | continue; | ||
90 | } | ||
91 | copy = min_t(unsigned int, iov->iov_len - offset, len); | ||
92 | if (copy_to_user(iov->iov_base + offset, kdata, copy)) | ||
93 | return -EFAULT; | ||
94 | offset = 0; | ||
95 | kdata += copy; | ||
96 | len -= copy; | ||
97 | } | ||
98 | |||
99 | return 0; | ||
100 | } | ||
101 | EXPORT_SYMBOL(memcpy_toiovecend); | ||
102 | |||
103 | /* | ||
104 | * Copy iovec to kernel. Returns -EFAULT on error. | ||
105 | */ | ||
106 | |||
107 | int memcpy_fromiovecend(unsigned char *kdata, const struct iovec *iov, | ||
108 | int offset, int len) | ||
109 | { | ||
110 | /* Skip over the finished iovecs */ | ||
111 | while (offset >= iov->iov_len) { | ||
112 | offset -= iov->iov_len; | ||
113 | iov++; | ||
114 | } | ||
115 | |||
116 | while (len > 0) { | ||
117 | u8 __user *base = iov->iov_base + offset; | ||
118 | int copy = min_t(unsigned int, len, iov->iov_len - offset); | ||
119 | |||
120 | offset = 0; | ||
121 | if (copy_from_user(kdata, base, copy)) | ||
122 | return -EFAULT; | ||
123 | len -= copy; | ||
124 | kdata += copy; | ||
125 | iov++; | ||
126 | } | ||
127 | |||
128 | return 0; | ||
129 | } | ||
130 | EXPORT_SYMBOL(memcpy_fromiovecend); | ||
131 | |||
132 | /* | ||
133 | * And now for the all-in-one: copy and checksum from a user iovec | 78 | * And now for the all-in-one: copy and checksum from a user iovec |
134 | * directly to a datagram | 79 | * directly to a datagram |
135 | * Calls to csum_partial but the last must be in 32 bit chunks | 80 | * Calls to csum_partial but the last must be in 32 bit chunks |