int open(const char *pathname, int flags, mode_t mode) doubt... Post: 302145841

10 More Discussions You Might Find Interesting

1. Programming

difference between int ** func() and int *& func()

What is the difference between int** func() and int*& func(). Can you please explain it with suitable example. Thanks, Devesh.

2. Red Hat

cast from const void* to unsigned int loses precision

Hello everey one, here i am attempting to compile a c++ project .it's throughing the following errors. my machine details are as follows: Linux chmclozr0119 2.6.18-53.el5 #1 SMP Wed Oct 10 16:34:19 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux errors: ===== Generating...

3. Programming

How to read flags from mode_t type?

Hello, After, I stat() a file, how can I read the various permissions flags from the st_mode variable which is of type mode_t? I would like to do something like: struct stat *perms; int res = stat(filename, perms); if(perms->st.mode == S_IROTH) do something; but I know that is the wrong...

4. Programming

concat const char * with char *

hello everybody! i have aproblem! i dont know how to concatenate const char* with char const char *buffer; char *b; sprintf(b,"result.txt"); strcat(buffer,b); thanx in advance

5. Programming

conversion to 'char' from 'int' warning

Hi, I wrote a simple code in C++ converting from UpperToLower case characters. However, my compiler gives me a warning: "warning: conversion to 'char' from 'int' may alter its value". Any tips? I would like to stress, I don't want to load my string into char array. int ToLower(string...

6. Programming

Handle int listen(int sockfd, int backlog) in TCP

Hi, from the manual listen(2): listen for connections on socket - Linux man page It has a parameter called backlog and it limits the maximum length of queue of pending list. If I set backlog to 128, is it means no more than 128 packets can be handled by server? If I have three...

7. Programming

C++ program is crashing on re-assigning const static member variable using an int pointer

Hi, Can any one tell me why my following program is crashing? #include <iostream> using namespace std; class CA { public: const static int i; }; const int CA::i = 10; int main() { int* pi = const_cast<int*>(&CA::i); *pi = 9; cout << CA::i << endl; }

8. Programming

error: invalid conversion from �const char� to �char�

Compiling xpp (The X Printing Panel) on SL6 (RHEL6 essentially): xpp.cxx: In constructor ‘printFiles::printFiles(int, char**, int&)’: xpp.cxx:200: error: invalid conversion from ‘const char*’ to ‘char*’ The same error with all c++ constructors - gcc 4.4.4. If anyone can throw any light on...

9. Programming

Help with understanding ( int, char, long, short, signed, unsigned etc.... )

My question is simple: When should I use a long, int, char, unsigned/signed variables?? When I declare a variable "unsigned;" what did I do it??? Why would I delcare an integer "long" or "short" ( unsigned or signed)?? Any examples of when things like "unsigned", "long", "short" etc......

10. Programming

Small query regarding function "char * strerror(int errnum)"

As this function returns the address of the string corressponding to the errno value provided to it. Can someone please let me know where, in the memory, it could be (on freeBSD). The MAN page tells under the BUG section that "For unknown error numbers, the strerror() function will return its...

LEARN ABOUT CENTOS

pam_umask

PAM_UMASK(8)							 Linux-PAM Manual						      PAM_UMASK(8)

NAME

       pam_umask - PAM module to set the file mode creation mask

SYNOPSIS

       pam_umask.so [debug] [silent] [usergroups] [umask=mask]

DESCRIPTION

       pam_umask is a PAM module to set the file mode creation mask of the current environment. The umask affects the default permissions assigned
       to newly created files.

       The PAM module tries to get the umask value from the following places in the following order:

       o   umask= argument

       o   umask= entry in the user's GECOS field

       o   UMASK= entry from /etc/default/login

       o   UMASK entry from /etc/login.defs

       The GECOS field is split on comma ',' characters. The module also in addition to the umask= entry recognizes pri= entry, which sets the
       nice priority value for the session, and ulimit= entry, which sets the maximum size of files the processes in the session can create.

OPTIONS

       debug
	   Print debug information.

       silent
	   Don't print informative messages.

       usergroups
	   If the user is not root and the username is the same as primary group name, the umask group bits are set to be the same as owner bits
	   (examples: 022 -> 002, 077 -> 007).

       umask=mask
	   Sets the calling process's file mode creation mask (umask) to mask & 0777. The value is interpreted as Octal.

MODULE TYPES PROVIDED

       Only the session type is provided.

RETURN VALUES

       PAM_SUCCESS
	   The new umask was set successfully.

       PAM_SERVICE_ERR
	   No username was given.

       PAM_USER_UNKNOWN
	   User not known.

EXAMPLES

       Add the following line to /etc/pam.d/login to set the user specific umask at login:

		   session optional pam_umask.so umask=0022

SEE ALSO

       pam.conf(5), pam.d(5), pam(8)

AUTHOR

       pam_umask was written by Thorsten Kukuk <kukuk@thkukuk.de>.

Linux-PAM Manual						    09/19/2013							      PAM_UMASK(8)

10 More Discussions You Might Find Interesting

1. Programming

difference between int ** func() and int *& func()

Discussion started by: devesh

2. Red Hat

cast from const void* to unsigned int loses precision

Discussion started by: mannam srinivas

3. Programming

How to read flags from mode_t type?

Discussion started by: pallak7

4. Programming

concat const char * with char *

Discussion started by: nicos