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xt_spawnvp(3) Library Functions Manual xt_spawnvp(3) NAME xt_spawnvp() - Fork and exec a new process from an argv-style array LIBRARY #include <xtend/proc.h> -lxtend SYNOPSIS // FIXME: Ugly stop-gap for now. sig_t is not portable, so don't use it. #if defined(__sun__) typedef void (*sig_t)(int); #endif int xt_spawnvp(int parent_action, int echo, char *argv[], char *infile, char *outfile, char *errfile) ARGUMENTS parent_action: P_WAIT or P_NOWAIT echo: P_ECHO or P_NOECHO infile: File to which stdin of child is redirected or NULL outfile: File to which stdout of child is redirected or NULL errfile: File to which stderr of child is redirected or NULL DESCRIPTION xt_spawnvp() and xt_spawnlp() are wrappers around fork(2) and exec(3) which make it easy to run a child process without an intermediate shell process as is used by system(3). The xt_spawnlp() function spawns a child process using a variable argument list. The 6th argument is passed to argv[0] of the child, the 7th to argv[1], etc. The xt_spawnvp() function spawns a process using the command contained in an argv[] array constructed by the caller. xt_spawnlp() automatically con- structs such an argv[] array and calls xt_spawnvp(). The calling process waits for the child to complete if P_WAIT is passed to parent_action, or continues immediately if P_NOWAIT is passed. If P_ECHO is passed as the echo argument, the command is echoed, the command is echoed to the parent's stdout. If infile, outfile, or errfile are not NULL, then the corresponding file streams stdin, stdout, or stderr are redirected to the filename provided. RETURN VALUES The exit status of the child process if P_WAIT is passed The PID of the child process if P_NOWAIT is passed SEE ALSO xt_spawnlp(3), fork(2), exec(3) xt_spawnvp(3)
NAME | LIBRARY | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURN VALUES | SEE ALSO
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