This function returns the size of the value buffer on success and 0 if the name specified is not a valid environment variable name.
如果成功，则此函数返回值缓存的大小，如果指定的名称并不是一个合法的环境变量名，则返回0。
If a function needs to maintain the state of some data over successive calls, such as a working buffer or a pointer, the caller should provide this data.
如果函数需要在一系列调用期间维持某些数据的状态，比如工作缓存或指针，那么调用者应该提供此数据。
An attacker may be able to exploit a buffer overflow by changing the value of other data in the function; none of these approaches counter that.
攻击者也许能够通过改变函数中其他数据的值来利用缓冲区溢出；没有哪种方法能够防止这点。
Attacking using a buffer overflow can change this process and allow an attacker to execute any function they wish.
利用缓冲区溢出进行攻击可以改变这个过程，并且允许黑客执行任何他们期望的函数。
This function accepts a pointer to a user space buffer, a pointer to a kernel buffer, and a length defined in bytes.
该函数接受一个指向用户空间缓冲区的指针、一个指向内存缓冲区的指针、以及一个以字节定义的长度。
For the actual buffer processing, the function is perfectly capable of handling zero-sized buffers by simply returning.
对于实际的缓冲区处理，函数只需直接返回，就能够很好地处理大小为零的缓冲区。
For each line in the line buffer for a CU, check for the low address match to find the first line number for the function.
要获得CU的行缓冲的每一行，则需要检查低位地址匹配以找到函数的第一行的行号。
This protects against stack, buffer, and function pointer overflows, all without recompilation.
这样将保护程序代码避免堆栈、缓冲区和函数指针溢出，而且全都不需重新编译。
The function in Listing 3 frees any memory blocks in the linked list, then frees the Buffer allocated by newBuffer().
清单3 中的函数释放链表中的所有内存块，然后释放由 newBuffer()分配的Buffer 。
You may benefit by implementing a function that returns the number of bytes currently stored in an abstract buffer
实现一个函数来返回当前存储在抽象缓冲区中的字节数目，这样可能会带来好处。
In a similar fashion, you can read data segments off segment by segment from an abstract buffer with the following function.
采用类似的方式，您可以使用以下函数，逐段地从抽象缓冲区读取数据段。
The string passed into printk is then copied into the kernel log buffer using a special function that manages the bounds of the ring (emit_log_char).
这个字符串会被传递给printk，然后它会被一个管理缓冲边界(emit_log_char)的特殊函数复制到内核日志缓冲区中。
To incrementally append data segments to an abstract buffer, use the following function
要逐步向抽象缓冲区追加数据段，可使用以下函数
The snprintf function allows you to print safely into a buffer of fixed size.
snprintf函数让您可以安全地输出到固定大小的缓冲区。
The strncpy_from_user function copies a string from user space into a kernel buffer, given a user space source address and Max length.
strncpy _ from_user函数将一个字符串从用户空间复制到一个内核缓冲区，给定一个用户空间源地址和最大长度。
First, we create need a buffer to write to for the sprintf call using the malloc function.
首先，我们在使用malloc函数中的sprintf调用时需要创建一个缓冲器(buffer)。
As a copy from user space, this function first checks that the buffer is readable via access_ok.
由于从用户空间复制，该函数首先使用access_ok检查缓冲区是否可读。
The strnlen_user function is used just like strnlen but assumes that the buffer is available in user space.
strnlen_user函数也能像strnlen 那样使用，但前提是缓冲区在用户空间可用。
The Uniq function is declared to take a range, so it will only be called once, even when invoked on a range of lines in the buffer.
Uniq函数被声明为接受一个范围，因此只能调用一次，即使在缓冲区内的一个行范围上调用时。
Otherwise, we call the setvbuf() function to set a buffer of size INBUFSIZ (earlier #defined as 16KB) for reading from fin.
若能打开，则调用setvbuf()函数来设置大小为INBUFSIZ的缓冲区（以前用 #defined 定义为16KB）以从fin 进行读取。
This function is available everywhere, and you should use it just about all the time; a lot of security holes have been based on buffer overruns in sprintf, and this can protect against them.
这个函数随处可用，而且您应该始终使用它；很多安全漏洞都归咎于sprintf中的缓冲区溢出，而这个函数可以预防这个问题。
The strnlen_user function first checks to see that the user buffer is readable through a call to access_ok.
strnlen_user函数首先通过调用access_ok检查用户缓冲区是否可读。
Otherwise, the buffer will either be deleted when MemBufFormatTarget is destroyed or it will be reset when the reset function is called.
否则，该缓冲区会在破坏MemBufFor matTarget时被删除，或者在调用reset函数时被复位。
In Listing 2, the function allocates a piece of memory containing a buffer and initializes its entries to indicate an empty abstract buffer.
在清单2中，该函数分配了包含一个Buffer的内存块，并初始化它的条目以指明它是一个空抽象缓冲区。
Also, sometimes we need to copy information between the buffer, and this is done by the AddAndFlush (..) function in the IOCPS class.
我们有时也需要在两个内存间复制信息，CIOCPS类中的AddAndFlush函数可以实现。
The strnlen_user function takes two arguments: the user space buffer address and the maximum length to check.
strnlen_user函数带有两个参数：用户空间缓冲区地址和要检查的最大长度。
This function takes a 32-bit integer from the request, and USES it in an arithmetic operation that calculates the size of a dynamic buffer.
此函数从请求中提取一个32位整数，并使用它中的算术运算来计算一个动态缓冲区的大小。
Far more importantly, however, the function does only one-third as many buffer accesses, and the code is much clearer and more maintainable.
不过，更重要的是该函数的缓存访问量只有原来的三分之一，并且代码更加简洁，更加易于维护。
This function will create a new buffer feature data layer around the input point features at user specified distance.
此函数将以输入点为基础，按照用户指定的距离创建一个新缓冲区轮廓数据层。
This function will create a new buffer feature data layer around the input point features at user specified distance.
此函数将以输入点为基础，按照用户指定的距离创建一个新缓冲区轮廓数据层。
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