NAME¶
Ns_ExecArgblk, Ns_ExecArgv, Ns_ExecProc, Ns_ExecProcess, Ns_Fork, Ns_GetEnviron,
Ns_WaitForProcess, Ns_WaitProcess, ns_fork - External process execution
SYNOPSIS¶
#include "ns.h"
int
Ns_ExecArgblk(char *exec, char *dir, int fdin, int fdout,
char *args, Ns_Set *env)
int
Ns_ExecArgv(char *exec, char *dir, int fdin, int fdout,
char **argv, Ns_Set *env)
int
Ns_ExecProc(char *exec, char **argv)
int
Ns_ExecProcess(char *exec, char *dir, int fdin, int fdout,
char *args, Ns_Set *env)
int
Ns_Fork(void)
char
**Ns_GetEnviron(void)
int
Ns_WaitForProcess(int pid, int *statusPtr)
int
Ns_WaitProcess(int pid)
int
ns_fork(void)
DESCRIPTION¶
These functions handle fork and exec operations. See files: nsd/exec.c,
nsd/tclenv.c and nsthread/fork.c.
- Ns_ExecArgblk(exec, dir, fdin, fdout, args, env)
-
Executes a command in a child process. Return process id of child process
exec´ing the command or -1 on failure. Provides extended error
checking and error messages.
- Ns_ExecArgv(exec, dir, fdin, fdout, argv, env)
-
Execute a command in a child process using fork(2) and execve(2), returns
the process id of child process exec´ing the command or -1 on
failure. The child sends an extended error message to the parent.
- Ns_ExecProc(exec, argv)
-
Executes a command in a child process. Returns the process id of the child
process exec´ing the command or -1 on failure. Simplifies call to
Ns_ExecArgv.
- Ns_ExecProcess(exec, dir, fdin, fdout, args, env)
-
Executes a command in a child process. Returns the process id of the child
process exec´ing the command or -1 on failure. Calls Ns_ExecArgblk
with same arguments.
- Ns_Fork()
- Posix style fork(), using fork1() on Solaris if needed. See fork(2) man
page. Calls ns_fork.
- Ns_GetEnviron()
-
Returns pointer to the environment vector.
- Ns_WaitForProcess(pid, statusPtr)
-
Wait for child process. Returns NS_OK on success, or NS_ERROR on failure.
*statusPtr is set to the exit code of the child process.
- Ns_WaitProcess(pid)
-
Wait for child process. Calls Ns_WaitForProcess with NULL statusPtr. Returns
NS_OK on success, or NS_ERROR on failure.
- ns_fork()
-
Posix style fork(), using fork1() on Solaris if needed.
SEE ALSO¶
nsd(1), info(n)
KEYWORDS¶