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59 řádky
1.8 KiB
59 řádky
1.8 KiB
#pragma once
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#define CMDLINE_MAX_SIZE 1024 /* max length of a single command line */
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#define ARGS_MAX_QUANTITY 128 /* max args on a command line */
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#define BUFFER_MAX_SIZE 64 /* max size of a buffer which contains parsed arguments */
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#define CMDLINE_DIV ' \t\r\n\a'
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#define CMDLINE_HISTORY_MAX_QUANTITY 256
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#define JOBS_MAX_QUANTITY 16
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#define PATH_MAX_SIZE 256
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#define FG 1 /* running in foreground */
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#define BG 2 /* running in background */
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#define ST 3 /* stopped */
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/* job_t - The job struct */
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struct job_t
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{
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pid_t pid; /* job PID */
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int jid; /* job ID [1, 2, ...] */
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int state; /* UNDEF, BG, FG, or ST */
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char cmdline[CMDLINE_MAX_SIZE]; /* command line */
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};
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/* readline - Get the command line */
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char *readline();
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/* parseline - Evaluate the command line that the user has just typed in */
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int parseline(char *cmdline, char **args);
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/* execute - Execute the command line */
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int execute(char *cmdline, char **args);
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/* builtin functions - Handle built-in command */
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int built_in(char **args);
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int builtin_cd(char **args);
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int builtin_ls(char **args);
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int builtin_history(char **args);
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int builtin_jobs(char **args);
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int builtin_mytop(char **args);
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/* do_bgfg - Execute background/foregroung tasks */
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int do_bgfg(char **args);
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/* addjob - Add jobs to joblist */
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int addjob(struct job_t *jobs, pid_t pid, int state, char *cmdline);
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/* pide2jid - Map process ID to job ID*/
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int pid2jid(pid_t pid);
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/* waitfg - Wait foreground jobs to finish */
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void waitfg(pid_t pid);
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/* fgpid - Return PID of current foreground job, 0 if no such job */
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pid_t fgpid(struct job_t *jobs);
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/* determine if a file is hidden */
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int hide(const char *path);
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/* */
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