procfs.h File Reference

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Functions
int	procfs_pid_slurp (int pid, char *prop, char *out, size_t len)

Function Documentation

procfs_pid_slurp()

int procfs_pid_slurp	(	int	pid,
		char *	prop,
		char *	out,
		size_t	len
	)

Definition at line 7 of file procfs.c.

                                                                 {
    int fd, ret = -1;
    ssize_t nr;
 
    char *filename = rz_str_newf("/proc/%d/%s", pid, prop);
    if (!filename) {
        return -1;
    }
    fd = rz_sys_open(filename, O_RDONLY, 0);
    if (fd == -1) {
        free(filename);
        return -1;
    }
    nr = read(fd, out, len);
    out[len - 1] = 0;
    if (nr > 0) {
        out[nr - 1] = '\0'; /* terminate at newline */
        ret = 0;
    } else if (nr < 0) {
        rz_sys_perror("read");
    }
    close(fd);
    free(filename);
    return ret;
}

References close, fd, free(), len, O_RDONLY, out, pid, read(), rz_str_newf(), rz_sys_open(), and rz_sys_perror.

Referenced by linux_add_new_thread(), linux_pid_list(), and linux_thread_list().