SIMPLE SOLUTIONS

NS_EXECARGBLK - reference manual online

Chapter
4.0
Ns_Exec(3aolserver)                AOLserver Library Procedures               Ns_Exec(3aolserver)

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NAME Ns_ExecArgblk, Ns_ExecArgv, Ns_ExecProc, Ns_ExecProcess, Ns_Fork, Ns_GetEnviron, Ns_Wait‐ ForProcess, 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)
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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. *sta‐ tusPtr 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 AOLserver 4.0 Ns_Exec(3aolserver)
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Ns_ExecArgblk(3aolserver) referred by
refer to execve(2) | fork(2)