The following code:
always returns with "illegal seek" error. "mem" is executable with correct permissions. Can someone point me
in the right direction?
Dear Friends,
I write a c program to list the directories recursively. For this I write a function called my_readdir to read the content of directory. For this I use read system call it returns -1, then I use readdir system call it gives comment terminated error or segmentation... (1 Reply)
hi,
where can I find the detail information about the syscall in binary instructions of linux/mips.
for example, in linux/mips:
li v0, 4140
syscall
it's a syacall of "lseek" , but how can I find that which registers will be used in this syscall , and the meaning of the arguments in the... (2 Replies)
recently my project needs me to lseek a position over 4G size....
i found in linux or unix the parameters are all ulong 32 bits...the limit dooms the movement of a position over 4G
I was told that i should lseek64 to meet my need... but i have no idea where i can get the function neither by "man... (8 Replies)
I know there is lseek() function that will allow to write or read from certain position in the file. Is there similar function that will let do same but for array rather then file? (9 Replies)
Hi everybody,
i've been googling for ages now and gotten kinda desperate... The question, however, might be rather trivial for the experts: What is it exactly, i.e. physically, the POSIX function (for a file) "lseek" does? Does it trigger some kind of synchronization on disk? Is it just for the... (4 Replies)
I tried to use lseek system call to determine the number of bytes in a file. To do so, I used open system call with O_APPEND flag to open a file. As lseek returns the current offset so I called lseek for opened file with offset as zero and whence as SEEK_CUR. So I guess it must return the number of... (3 Replies)
Hi,
We are facing issues while backing up our 1205 GB filesystem on LTO5 Tape. During backup the "backup: The lseek call failed." messages were generated, I want to know why these messages were generating
AIX version is: 6100-08-00-0000
backup: The date of this level 0 backup is Mon Mar 11... (4 Replies)
Hi all...
I am trying to create a shell project purely for this Macbook Pro.
I do NOT want to use SOX as the sampling _source_ but Quicktime
instead, the idea being that NO third party installs will be needed.
The code below works fine except the commented out Applescript line
does not do... (2 Replies)
Discussion started by: wisecracker
2 Replies
LEARN ABOUT FREEBSD
getcwd
GETCWD(3) BSD Library Functions Manual GETCWD(3)NAME
getcwd, getwd -- get working directory pathname
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <unistd.h>
char *
getcwd(char *buf, size_t size);
char *
getwd(char *buf);
DESCRIPTION
The getcwd() function copies the absolute pathname of the current working directory into the memory referenced by buf and returns a pointer
to buf. The size argument is the size, in bytes, of the array referenced by buf.
If buf is NULL, space is allocated as necessary to store the pathname. This space may later be free(3)'d.
The function getwd() is a compatibility routine which calls getcwd() with its buf argument and a size of MAXPATHLEN (as defined in the
include file <sys/param.h>). Obviously, buf should be at least MAXPATHLEN bytes in length.
These routines have traditionally been used by programs to save the name of a working directory for the purpose of returning to it. A much
faster and less error-prone method of accomplishing this is to open the current directory ('.') and use the fchdir(2) function to return.
RETURN VALUES
Upon successful completion, a pointer to the pathname is returned. Otherwise a NULL pointer is returned and the global variable errno is set
to indicate the error. In addition, getwd() copies the error message associated with errno into the memory referenced by buf.
ERRORS
The getcwd() function will fail if:
[EINVAL] The size argument is zero.
[ENOENT] A component of the pathname no longer exists.
[ENOMEM] Insufficient memory is available.
[ERANGE] The size argument is greater than zero but smaller than the length of the pathname plus 1.
The getcwd() function may fail if:
[EACCES] Read or search permission was denied for a component of the pathname. This is only checked in limited cases, depending on
implementation details.
SEE ALSO chdir(2), fchdir(2), malloc(3), strerror(3)STANDARDS
The getcwd() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1''). The ability to specify a NULL pointer and have getcwd() allocate memory
as necessary is an extension.
HISTORY
The getwd() function appeared in 4.0BSD.
BUGS
The getwd() function does not do sufficient error checking and is not able to return very long, but valid, paths. It is provided for compat-
ibility.
BSD April 17, 2010 BSD