diff options
Diffstat (limited to 'sh.c')
| -rw-r--r-- | sh.c | 22 |
1 files changed, 11 insertions, 11 deletions
@@ -66,7 +66,7 @@ runcmd(struct cmd *cmd) if(cmd == 0) exit(); - + switch(cmd->type){ default: panic("runcmd"); @@ -120,7 +120,7 @@ runcmd(struct cmd *cmd) wait(); wait(); break; - + case BACK: bcmd = (struct backcmd*)cmd; if(fork1() == 0) @@ -146,7 +146,7 @@ main(void) { static char buf[100]; int fd; - + // Ensure that three file descriptors are open. while((fd = open("console", O_RDWR)) >= 0){ if(fd >= 3){ @@ -154,7 +154,7 @@ main(void) break; } } - + // Read and run input commands. while(getcmd(buf, sizeof(buf)) >= 0){ if(buf[0] == 'c' && buf[1] == 'd' && buf[2] == ' '){ @@ -182,7 +182,7 @@ int fork1(void) { int pid; - + pid = fork(); if(pid == -1) panic("fork"); @@ -267,7 +267,7 @@ gettoken(char **ps, char *es, char **q, char **eq) { char *s; int ret; - + s = *ps; while(s < es && strchr(whitespace, *s)) s++; @@ -300,7 +300,7 @@ gettoken(char **ps, char *es, char **q, char **eq) } if(eq) *eq = s; - + while(s < es && strchr(whitespace, *s)) s++; *ps = s; @@ -311,7 +311,7 @@ int peek(char **ps, char *es, char *toks) { char *s; - + s = *ps; while(s < es && strchr(whitespace, *s)) s++; @@ -419,7 +419,7 @@ parseexec(char **ps, char *es) int tok, argc; struct execcmd *cmd; struct cmd *ret; - + if(peek(ps, es, "(")) return parseblock(ps, es); @@ -458,7 +458,7 @@ nulterminate(struct cmd *cmd) if(cmd == 0) return 0; - + switch(cmd->type){ case EXEC: ecmd = (struct execcmd*)cmd; @@ -477,7 +477,7 @@ nulterminate(struct cmd *cmd) nulterminate(pcmd->left); nulterminate(pcmd->right); break; - + case LIST: lcmd = (struct listcmd*)cmd; nulterminate(lcmd->left); |