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Top Forums Programming Call a C programming executable inside a C program Post 302385657 by Lakris on Friday 8th of January 2010 10:36:19 PM
Old 01-08-2010
Hi,
You can call any other program in the operating system with, for example, system(), and it can call/run itself (ie another instance of itself). But what is it that You want to do? Pass values between them?

/Lakris
 

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ISSETUGID(2)						      BSD System Calls Manual						      ISSETUGID(2)

NAME
issetugid -- is current executable running setuid or setgid SYNOPSIS
#include <unistd.h> int issetugid(void); DESCRIPTION
The issetugid() function returns 1 if the process was made setuid or setgid as the result of the last execve() system call. Otherwise it returns 0. This system call exists so that library routines (inside libc, libtermlib, or other libraries) can gaurantee safe behavior when used inside setuid or setgid programs. Some library routines may not be passed sufficient information to know if the current program was started setuid or setgid because higher level calling code may have made changes to the uid or the euid. In particular, it is wise to use this call to determine if a pathname returned from a getenv() call may safely be used to open() the specified file. issetugid() is unaffected by calls to setuid(), fork(), and other such calls. It is only controlled by execve(). ERRORS
The issetugid() function is always successful, and no return value is reserved to indicate an error. SEE ALSO
execve(2), setuid(2), seteuid(2,) setgid(2), setegid(2) HISTORY
A lstat() function call appeared in OpenBSD 2.0 OpenBSD 2.0 August, 25 1996 OpenBSD 2.0
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