KLDSYM(2) BSD System Calls Manual KLDSYM(2)NAME
kldsym -- look up address by symbol name in a KLD
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <sys/param.h>
#include <sys/linker.h>
int
kldsym(int fileid, int command, void *data);
DESCRIPTION
The kldsym() system call returns the address of the symbol specified in data in the module specified by fileid. If fileid is 0, all loaded
modules are searched. Currently, the only command implemented is KLDSYM_LOOKUP.
The data argument is of the following structure:
struct kld_sym_lookup {
int version; /* sizeof(struct kld_sym_lookup) */
char *symname; /* Symbol name we are looking up */
u_long symvalue;
size_t symsize;
};
The version member is to be set by the code calling kldsym() to sizeof(struct kld_sym_lookup). The next two members, version and symname,
are specified by the user. The last two, symvalue and symsize, are filled in by kldsym() and contain the address associated with symname and
the size of the data it points to, respectively.
RETURN VALUES
The kldsym() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate
the error.
ERRORS
The kldsym() system call will fail if:
[EINVAL] Invalid value in data->version or command.
[ENOENT] The fileid argument is invalid, or the specified symbol could not be found.
SEE ALSO kldfind(2), kldfirstmod(2), kldload(2), kldnext(2), kldunload(2), modfind(2), modnext(2), modstat(2), kld(4)HISTORY
The kldsym() system call first appeared in FreeBSD 3.0.
BSD July 26, 2001 BSD
Check Out this Related Man Page
KLDSYM(2) BSD System Calls Manual KLDSYM(2)NAME
kldsym -- look up address by symbol name in a KLD
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <sys/param.h>
#include <sys/linker.h>
int
kldsym(int fileid, int command, void *data);
DESCRIPTION
The kldsym() system call returns the address of the symbol specified in data in the module specified by fileid. If fileid is 0, all loaded
modules are searched. Currently, the only command implemented is KLDSYM_LOOKUP.
The data argument is of the following structure:
struct kld_sym_lookup {
int version; /* sizeof(struct kld_sym_lookup) */
char *symname; /* Symbol name we are looking up */
u_long symvalue;
size_t symsize;
};
The version member is to be set by the code calling kldsym() to sizeof(struct kld_sym_lookup). The next two members, version and symname,
are specified by the user. The last two, symvalue and symsize, are filled in by kldsym() and contain the address associated with symname and
the size of the data it points to, respectively.
RETURN VALUES
The kldsym() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate
the error.
ERRORS
The kldsym() system call will fail if:
[EINVAL] Invalid value in data->version or command.
[ENOENT] The fileid argument is invalid, or the specified symbol could not be found.
SEE ALSO kldfind(2), kldfirstmod(2), kldload(2), kldnext(2), kldunload(2), modfind(2), modnext(2), modstat(2), kld(4)HISTORY
The kldsym() system call first appeared in FreeBSD 3.0.
BSD July 26, 2001 BSD
Why do shell builtins like echo and pwd have binaries in /bin? When I do which pwd, I get the one in /bin. that means that I am not using the builtin version? What determines which one gets used? Is the which command a definitive way to determine what is being run when I enter pwd? (16 Replies)
Introduction
I have seen some misinformation regarding Unix file permissions. I will try to set the record straight. Take a look at this example of some output from ls:
$ ls -ld /usr/bin /usr/bin/cat
drwxrwxr-x 3 root bin 8704 Sep 23 2004 /usr/bin
-r-xr-xr-x 1 bin bin ... (6 Replies)
I see lot of ad-hoc shell scripts in our servers which don't have a shebang at the beginning .
Does this mean that it will run on any shell ?
Is it a good practice to create scripts (even ad-hoc ones) without shebang ? (16 Replies)
For a starter I know the braces are NOT in the code...
Consider these code snippets:-
#!/bin/bash --posix
x=0
somefunction()
if
then
echo "I am here."
fi
# somefunction
#!/bin/bash --posix
x=0
somefunction()
if (2 Replies)
Hi everyone,
I know the following questions are noobish questions but I am asking them because I am confused about the basics of history behind UNIX and LINUX.
Ok onto business, my questions are-:
Was/Is UNIX ever an open source operating system ?
If UNIX was... (21 Replies)
For those interested in installing dash shell on OSX Lion to help test POSIX compliancy of shell scripts, it is quite easy. I did it like this:
If you don't have gcc on your system:
0. Download and install the Command Line Tools for Xcode package from Sign In - Apple *
1. Download the dash... (2 Replies)
Hi all,
I am learning POSIX shell programming, and the book I read, uses the let command for integer arithmetic.
I have downloaded and use the shellcheck program on Linux.
This programs says:
In POSIX sh, 'let' is undefined.
See the screenshot attached.
What is the POSIX... (1 Reply)
I don't know how to start this but here goes.
I've been "using" Linux for over 10 years, possibly more and I still feel like I'm nowhere
where I should be. I'll be fair most of my time was spent either figuring out how
to run games on *nix at the time but as I got older and "wiser" I... (8 Replies)
In a professional environment with traditional application you often want (or are asked) to report the users.
Traditionally there is the who command
who | awk '{print $1}'telnetd or sshd register the users in the utmp file, to be shown with who, w, users, finger, pinky, ...
In addition they... (1 Reply)
Hi all, (mainly Neo)...
I keep noticing that the SQRT code I wrote recently for a POSIX shell keeps appearing, (the green colour sticks out like a sore thumb).
So I decided to take a look on Google.
Guess what?
UNIX.COM comes first in Google's listing just from two words, see image... (2 Replies)