10 More Discussions You Might Find Interesting
1. Programming
I have many headers with huge amount of structures in them, typical one looks like this:
$ cat a.h
struct Rec1 {
int f1;
int f2;
};
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char r1;
char r2;
};
struct Rec3 {
int f1;
float k1;
float ... (6 Replies)
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2. Programming
Hi,
I have received an application that stores some properties in a file. The existing struct looks like this:
struct TData
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UINT uSizeIncludingStrings;
// copy of Telnet data struct
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// basic properties:
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3. Shell Programming and Scripting
Hey Guys,
I need your help where I have a C structure and I want it to be converted into corresponding function.
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typedef struct
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4. Programming
in C i am using this code to get the c time or a time or m time
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How can i check if i have permission to check the c time of the file? (1 Reply)
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5. UNIX for Dummies Questions & Answers
Can someone tell me how to do this?
Just a thought that entered my mind when learning about structs.
First thought was:
struct one
{
struct two;
}
struct two
{
three;
}
one->two->three
would this be how you would access "three"? (1 Reply)
Discussion started by: unbelievable21
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6. Linux
Hi,
I am working on gcov.Meaning, analysing the functionality of gcov. There is one structure called "struct bb". I am not sure, how struct bb members are getting assigned values. If anyone knows how it is happening pls let me know.
Thanks in advance.
--Vichu (0 Replies)
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7. Programming
in my .c file i have a struct atop of the program defined as follows:
#define MAX 10
int curtab;
static struct tab {
int count;
int use;
} tab;
with the initial function following it like so:
int tab_create(int init_count)
{
int i;
for(i=0; i < MAX; i++)
{... (1 Reply)
Discussion started by: micmac700
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8. Programming
I receive an integer as argument for a function.
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eg..
main()
{
int a;
......
}
function(...,..,a,..)
int a;
{
struct tm tm;
if(!a)
^ time(&a);
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9. Programming
hi all ,
can i save a structure in c in a file? how ?
help me , thx. :) (2 Replies)
Discussion started by: kall_ANSI
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10. Programming
Hi
We are using a code generator for initializing structures with the #define macro. Compiling it with the GCC 2.8.1 (with -ansi) it OK. But when we are using the SUN C 5.0 compiler it screams.
Following is a code sample:
#include <stdlib.h>
#include <stdio.h>
typedef struct TEST3 {... (4 Replies)
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PTY(3) BSD Library Functions Manual PTY(3)
NAME
openpty, forkpty -- auxiliary functions to obtain a pseudo-terminal
LIBRARY
System Utilities Library (libutil, -lutil)
SYNOPSIS
#include <sys/types.h>
#include <sys/ioctl.h>
#include <termios.h>
#include <libutil.h>
int
openpty(int *amaster, int *aslave, char *name, struct termios *termp, struct winsize *winp);
int
forkpty(int *amaster, char *name, struct termios *termp, struct winsize *winp);
DESCRIPTION
The function openpty() attempts to obtain the next available pseudo-terminal from the system (see pty(4)). If it successfully finds one, it
subsequently changes the ownership of the slave device to the real UID of the current process, the group membership to the group ``tty'' (if
such a group exists in the system), the access permissions for reading and writing by the owner, and for writing by the group, and invali-
dates any current use of the line by calling revoke(2).
If the argument name is not NULL, openpty() copies the pathname of the slave pty to this area. The caller is responsible for allocating the
required space in this array.
If the arguments termp or winp are not NULL, openpty() initializes the termios and window size settings from the structures these arguments
point to, respectively.
Upon return, the open file descriptors for the master and slave side of the pty are returned in the locations pointed to by amaster and
aslave, respectively.
The forkpty() function first calls openpty() to obtain the next available pseudo-terminal from the system. Upon success, it forks off a new
process. In the child process, it closes the descriptor for the master side of the pty, and calls login_tty(3) for the slave pty. In the
parent process, it closes the descriptor for the slave side of the pty. The arguments amaster, name, termp, and winp have the same meaning
as described for openpty().
RETURN VALUES
The openpty() function returns 0 on success, or -1 on failure.
The forkpty() function returns -1 on failure, 0 in the slave process, and the process ID of the slave process in the parent process.
ERRORS
The openpty() function may fail and set the global variable errno for any of the errors specified for the grantpt(3), posix_openpt(3),
ptsname(3), and unlockpt(3) functions and the revoke(2) system call.
In addition to this, forkpty() may set it to any value as described for fork(2).
SEE ALSO
chmod(2), chown(2), fork(2), getuid(2), open(2), revoke(2), login_tty(3), pty(4), termios(4), group(5)
BSD
December 29, 1996 BSD
