sh fixes from Marius Groeger <mag@sysgo.de>
-Erik
This commit is contained in:
Eric Andersen
parent
7c31ea4e29
commit
b54833cde0
@ -211,7 +211,7 @@
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//Allow the shell to invoke all the compiled in BusyBox commands as if they
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//were shell builtins. Nice for staticly linking an emergency rescue shell
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//amoung other thing.
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#define BB_FEATURE_STANDALONE_SHELL
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#define BB_FEATURE_SH_STANDALONE_SHELL
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//
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// Enable tab completion in the shell (not yet
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// working very well -- so don't turn this on)
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79
lash.c
79
lash.c
@ -41,7 +41,7 @@
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#include "cmdedit.h"
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#endif
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#define MAX_READ 128 /* size of input buffer for `read' builtin */
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#define JOB_STATUS_FORMAT "[%d] %-22s %.40s\n"
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@ -100,6 +100,7 @@ static int shell_pwd(struct job *dummy, struct jobSet *junk);
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static int shell_export(struct job *cmd, struct jobSet *junk);
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static int shell_source(struct job *cmd, struct jobSet *jobList);
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static int shell_unset(struct job *cmd, struct jobSet *junk);
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static int shell_read(struct job *cmd, struct jobSet *junk);
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static void checkJobs(struct jobSet *jobList);
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static int getCommand(FILE * source, char *command);
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@ -118,6 +119,7 @@ static struct builtInCommand bltins[] = {
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{"jobs", "Lists the active jobs", "jobs", shell_jobs},
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{"export", "Set environment variable", "export [VAR=value]", shell_export},
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{"unset", "Unset environment variable", "unset VAR", shell_unset},
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{"read", "Input environment variable", "read [VAR]", shell_read},
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{NULL, NULL, NULL, NULL}
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};
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@ -138,8 +140,8 @@ static const char shell_usage[] =
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#endif
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;
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static char cwd[1024];
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static char *prompt = "# ";
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static char *cwd = NULL;
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static char *local_pending_command = NULL;
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#ifdef BB_FEATURE_SH_COMMAND_EDITING
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@ -300,6 +302,40 @@ static int shell_export(struct job *cmd, struct jobSet *junk)
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return (res);
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}
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/* built-in 'read VAR' handler */
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static int shell_read(struct job *cmd, struct jobSet *junk)
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{
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int res = 0, len, newlen;
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char *s;
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char string[MAX_READ];
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if (cmd->progs[0].argv[1]) {
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/* argument (VAR) given: put "VAR=" into buffer */
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strcpy(string, cmd->progs[0].argv[1]);
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len = strlen(string);
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string[len++] = '=';
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string[len] = '\0';
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fgets(&string[len], sizeof(string) - len, stdin); /* read string */
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newlen = strlen(string);
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if(newlen > len)
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string[--newlen] = '\0'; /* chomp trailing newline */
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/*
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** string should now contain "VAR=<value>"
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** copy it (putenv() won't do that, so we must make sure
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** the string resides in a static buffer!)
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*/
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res = -1;
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if((s = strdup(string)))
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res = putenv(s);
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if (res)
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fprintf(stdout, "read: %s\n", strerror(errno));
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}
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else
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fgets(string, sizeof(string), stdin);
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return (res);
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}
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/* Built-in '.' handler (read-in and execute commands from file) */
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static int shell_source(struct job *cmd, struct jobSet *junk)
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{
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@ -461,7 +497,7 @@ static void globLastArgument(struct childProgram *prog, int *argcPtr,
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int rc;
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int flags;
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int i;
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char *src, *dst;
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char *src, *dst, *var;
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if (argc > 1) { /* cmd->globResult is already initialized */
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flags = GLOB_APPEND;
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@ -471,6 +507,9 @@ static void globLastArgument(struct childProgram *prog, int *argcPtr,
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flags = 0;
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i = 0;
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}
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/* do shell variable substitution */
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if(*prog->argv[argc - 1] == '$' && (var = getenv(prog->argv[argc - 1] + 1)))
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prog->argv[argc - 1] = var;
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rc = glob(prog->argv[argc - 1], flags, NULL, &prog->globResult);
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if (rc == GLOB_NOSPACE) {
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@ -535,12 +574,13 @@ static int parseCommand(char **commandPtr, struct job *job, int *isBg)
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job->progs = malloc(sizeof(*job->progs));
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/* We set the argv elements to point inside of this string. The
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memory is freed by freeJob().
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memory is freed by freeJob(). Allocate twice the original
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length in case we need to quote every single character.
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Getting clean memory relieves us of the task of NULL
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terminating things and makes the rest of this look a bit
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cleaner (though it is, admittedly, a tad less efficient) */
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job->cmdBuf = command = calloc(1, strlen(*commandPtr) + 1);
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job->cmdBuf = command = calloc(1, 2*strlen(*commandPtr) + 1);
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job->text = NULL;
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prog = job->progs;
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@ -583,9 +623,8 @@ static int parseCommand(char **commandPtr, struct job *job, int *isBg)
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sizeof(*prog->argv) *
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argvAlloced);
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}
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prog->argv[argc] = buf;
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globLastArgument(prog, &argc, &argvAlloced);
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prog->argv[argc] = buf;
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}
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} else
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switch (*src) {
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@ -615,6 +654,7 @@ static int parseCommand(char **commandPtr, struct job *job, int *isBg)
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if (*chptr && *prog->argv[argc]) {
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buf++, argc++;
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globLastArgument(prog, &argc, &argvAlloced);
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prog->argv[argc] = buf;
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}
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}
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@ -749,7 +789,7 @@ static int runCommand(struct job newJob, struct jobSet *jobList, int inBg)
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int nextin, nextout;
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int pipefds[2]; /* pipefd[0] is for reading */
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struct builtInCommand *x;
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#ifdef BB_FEATURE_STANDALONE_SHELL
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#ifdef BB_FEATURE_SH_STANDALONE_SHELL
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const struct BB_applet *a = applets;
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#endif
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@ -792,7 +832,7 @@ static int runCommand(struct job newJob, struct jobSet *jobList, int inBg)
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exit (x->function(&newJob, jobList));
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}
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}
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#ifdef BB_FEATURE_STANDALONE_SHELL
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#ifdef BB_FEATURE_SH_STANDALONE_SHELL
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/* Handle busybox internals here */
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while (a->name != 0) {
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if (strcmp(newJob.progs[i].argv[0], a->name) == 0) {
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@ -984,6 +1024,14 @@ static int busy_loop(FILE * input)
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if (tcsetpgrp(0, parent_pgrp))
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perror("tcsetpgrp");
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/* return controlling TTY back to parent process group before exiting */
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if (tcsetpgrp(0, parent_pgrp))
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perror("tcsetpgrp");
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/* return exit status if called with "-c" */
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if (input == NULL && WIFEXITED(status))
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return WEXITSTATUS(status);
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return 0;
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}
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@ -993,7 +1041,11 @@ int shell_main(int argc, char **argv)
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FILE *input = stdin;
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/* initialize the cwd */
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getcwd(cwd, sizeof(cwd));
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cwd = (char *) calloc(BUFSIZ, sizeof(char));
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if (cwd == 0) {
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fatalError("sh: out of memory\n");
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}
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getcwd(cwd, sizeof(char)*BUFSIZ);
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#ifdef BB_FEATURE_SH_COMMAND_EDITING
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cmdedit_init();
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@ -1018,10 +1070,13 @@ int shell_main(int argc, char **argv)
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for(i=2; i<argc; i++)
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{
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if (strlen(local_pending_command) + strlen(argv[i]) >= BUFSIZ) {
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fatalError("sh: commands for -c option too long\n");
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local_pending_command = realloc(local_pending_command,
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strlen(local_pending_command) + strlen(argv[i]));
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if (local_pending_command==NULL)
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fatalError("sh: commands for -c option too long\n");
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}
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strcat(local_pending_command, argv[i]);
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if (i + 1 < argc)
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if ( (i + 1) < argc)
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strcat(local_pending_command, " ");
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}
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input = NULL;
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79
sh.c
79
sh.c
@ -41,7 +41,7 @@
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#include "cmdedit.h"
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#endif
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#define MAX_READ 128 /* size of input buffer for `read' builtin */
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#define JOB_STATUS_FORMAT "[%d] %-22s %.40s\n"
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@ -100,6 +100,7 @@ static int shell_pwd(struct job *dummy, struct jobSet *junk);
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static int shell_export(struct job *cmd, struct jobSet *junk);
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static int shell_source(struct job *cmd, struct jobSet *jobList);
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static int shell_unset(struct job *cmd, struct jobSet *junk);
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static int shell_read(struct job *cmd, struct jobSet *junk);
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static void checkJobs(struct jobSet *jobList);
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static int getCommand(FILE * source, char *command);
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@ -118,6 +119,7 @@ static struct builtInCommand bltins[] = {
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{"jobs", "Lists the active jobs", "jobs", shell_jobs},
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{"export", "Set environment variable", "export [VAR=value]", shell_export},
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{"unset", "Unset environment variable", "unset VAR", shell_unset},
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{"read", "Input environment variable", "read [VAR]", shell_read},
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{NULL, NULL, NULL, NULL}
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};
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@ -138,8 +140,8 @@ static const char shell_usage[] =
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#endif
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;
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static char cwd[1024];
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static char *prompt = "# ";
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static char *cwd = NULL;
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static char *local_pending_command = NULL;
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#ifdef BB_FEATURE_SH_COMMAND_EDITING
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@ -300,6 +302,40 @@ static int shell_export(struct job *cmd, struct jobSet *junk)
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return (res);
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}
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/* built-in 'read VAR' handler */
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static int shell_read(struct job *cmd, struct jobSet *junk)
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{
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int res = 0, len, newlen;
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char *s;
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char string[MAX_READ];
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if (cmd->progs[0].argv[1]) {
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/* argument (VAR) given: put "VAR=" into buffer */
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strcpy(string, cmd->progs[0].argv[1]);
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len = strlen(string);
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string[len++] = '=';
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string[len] = '\0';
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fgets(&string[len], sizeof(string) - len, stdin); /* read string */
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newlen = strlen(string);
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if(newlen > len)
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string[--newlen] = '\0'; /* chomp trailing newline */
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/*
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** string should now contain "VAR=<value>"
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** copy it (putenv() won't do that, so we must make sure
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** the string resides in a static buffer!)
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*/
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res = -1;
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if((s = strdup(string)))
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res = putenv(s);
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if (res)
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fprintf(stdout, "read: %s\n", strerror(errno));
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}
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else
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fgets(string, sizeof(string), stdin);
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return (res);
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}
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/* Built-in '.' handler (read-in and execute commands from file) */
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static int shell_source(struct job *cmd, struct jobSet *junk)
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{
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@ -461,7 +497,7 @@ static void globLastArgument(struct childProgram *prog, int *argcPtr,
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int rc;
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int flags;
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int i;
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char *src, *dst;
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char *src, *dst, *var;
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if (argc > 1) { /* cmd->globResult is already initialized */
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flags = GLOB_APPEND;
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@ -471,6 +507,9 @@ static void globLastArgument(struct childProgram *prog, int *argcPtr,
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flags = 0;
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i = 0;
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}
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/* do shell variable substitution */
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if(*prog->argv[argc - 1] == '$' && (var = getenv(prog->argv[argc - 1] + 1)))
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prog->argv[argc - 1] = var;
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rc = glob(prog->argv[argc - 1], flags, NULL, &prog->globResult);
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if (rc == GLOB_NOSPACE) {
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@ -535,12 +574,13 @@ static int parseCommand(char **commandPtr, struct job *job, int *isBg)
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job->progs = malloc(sizeof(*job->progs));
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/* We set the argv elements to point inside of this string. The
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memory is freed by freeJob().
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memory is freed by freeJob(). Allocate twice the original
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length in case we need to quote every single character.
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Getting clean memory relieves us of the task of NULL
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terminating things and makes the rest of this look a bit
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cleaner (though it is, admittedly, a tad less efficient) */
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job->cmdBuf = command = calloc(1, strlen(*commandPtr) + 1);
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job->cmdBuf = command = calloc(1, 2*strlen(*commandPtr) + 1);
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job->text = NULL;
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prog = job->progs;
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@ -583,9 +623,8 @@ static int parseCommand(char **commandPtr, struct job *job, int *isBg)
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sizeof(*prog->argv) *
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argvAlloced);
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}
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prog->argv[argc] = buf;
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globLastArgument(prog, &argc, &argvAlloced);
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prog->argv[argc] = buf;
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}
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} else
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switch (*src) {
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@ -615,6 +654,7 @@ static int parseCommand(char **commandPtr, struct job *job, int *isBg)
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if (*chptr && *prog->argv[argc]) {
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buf++, argc++;
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globLastArgument(prog, &argc, &argvAlloced);
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prog->argv[argc] = buf;
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}
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}
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@ -749,7 +789,7 @@ static int runCommand(struct job newJob, struct jobSet *jobList, int inBg)
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int nextin, nextout;
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int pipefds[2]; /* pipefd[0] is for reading */
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struct builtInCommand *x;
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#ifdef BB_FEATURE_STANDALONE_SHELL
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#ifdef BB_FEATURE_SH_STANDALONE_SHELL
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const struct BB_applet *a = applets;
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#endif
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@ -792,7 +832,7 @@ static int runCommand(struct job newJob, struct jobSet *jobList, int inBg)
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exit (x->function(&newJob, jobList));
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}
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}
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#ifdef BB_FEATURE_STANDALONE_SHELL
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#ifdef BB_FEATURE_SH_STANDALONE_SHELL
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/* Handle busybox internals here */
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while (a->name != 0) {
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if (strcmp(newJob.progs[i].argv[0], a->name) == 0) {
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@ -984,6 +1024,14 @@ static int busy_loop(FILE * input)
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if (tcsetpgrp(0, parent_pgrp))
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perror("tcsetpgrp");
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/* return controlling TTY back to parent process group before exiting */
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if (tcsetpgrp(0, parent_pgrp))
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perror("tcsetpgrp");
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/* return exit status if called with "-c" */
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if (input == NULL && WIFEXITED(status))
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return WEXITSTATUS(status);
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return 0;
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}
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@ -993,7 +1041,11 @@ int shell_main(int argc, char **argv)
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FILE *input = stdin;
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/* initialize the cwd */
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getcwd(cwd, sizeof(cwd));
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cwd = (char *) calloc(BUFSIZ, sizeof(char));
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if (cwd == 0) {
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fatalError("sh: out of memory\n");
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}
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getcwd(cwd, sizeof(char)*BUFSIZ);
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#ifdef BB_FEATURE_SH_COMMAND_EDITING
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cmdedit_init();
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@ -1018,10 +1070,13 @@ int shell_main(int argc, char **argv)
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for(i=2; i<argc; i++)
|
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{
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if (strlen(local_pending_command) + strlen(argv[i]) >= BUFSIZ) {
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fatalError("sh: commands for -c option too long\n");
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local_pending_command = realloc(local_pending_command,
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strlen(local_pending_command) + strlen(argv[i]));
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if (local_pending_command==NULL)
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fatalError("sh: commands for -c option too long\n");
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}
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strcat(local_pending_command, argv[i]);
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if (i + 1 < argc)
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if ( (i + 1) < argc)
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strcat(local_pending_command, " ");
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}
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input = NULL;
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79
shell/lash.c
79
shell/lash.c
@ -41,7 +41,7 @@
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#include "cmdedit.h"
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#endif
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#define MAX_READ 128 /* size of input buffer for `read' builtin */
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#define JOB_STATUS_FORMAT "[%d] %-22s %.40s\n"
|
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|
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@ -100,6 +100,7 @@ static int shell_pwd(struct job *dummy, struct jobSet *junk);
|
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static int shell_export(struct job *cmd, struct jobSet *junk);
|
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static int shell_source(struct job *cmd, struct jobSet *jobList);
|
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static int shell_unset(struct job *cmd, struct jobSet *junk);
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static int shell_read(struct job *cmd, struct jobSet *junk);
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static void checkJobs(struct jobSet *jobList);
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static int getCommand(FILE * source, char *command);
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@ -118,6 +119,7 @@ static struct builtInCommand bltins[] = {
|
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{"jobs", "Lists the active jobs", "jobs", shell_jobs},
|
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{"export", "Set environment variable", "export [VAR=value]", shell_export},
|
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{"unset", "Unset environment variable", "unset VAR", shell_unset},
|
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{"read", "Input environment variable", "read [VAR]", shell_read},
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{NULL, NULL, NULL, NULL}
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};
|
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|
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@ -138,8 +140,8 @@ static const char shell_usage[] =
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#endif
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;
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|
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static char cwd[1024];
|
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static char *prompt = "# ";
|
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static char *cwd = NULL;
|
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static char *local_pending_command = NULL;
|
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|
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#ifdef BB_FEATURE_SH_COMMAND_EDITING
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@ -300,6 +302,40 @@ static int shell_export(struct job *cmd, struct jobSet *junk)
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return (res);
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}
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|
||||
/* built-in 'read VAR' handler */
|
||||
static int shell_read(struct job *cmd, struct jobSet *junk)
|
||||
{
|
||||
int res = 0, len, newlen;
|
||||
char *s;
|
||||
char string[MAX_READ];
|
||||
|
||||
if (cmd->progs[0].argv[1]) {
|
||||
/* argument (VAR) given: put "VAR=" into buffer */
|
||||
strcpy(string, cmd->progs[0].argv[1]);
|
||||
len = strlen(string);
|
||||
string[len++] = '=';
|
||||
string[len] = '\0';
|
||||
fgets(&string[len], sizeof(string) - len, stdin); /* read string */
|
||||
newlen = strlen(string);
|
||||
if(newlen > len)
|
||||
string[--newlen] = '\0'; /* chomp trailing newline */
|
||||
/*
|
||||
** string should now contain "VAR=<value>"
|
||||
** copy it (putenv() won't do that, so we must make sure
|
||||
** the string resides in a static buffer!)
|
||||
*/
|
||||
res = -1;
|
||||
if((s = strdup(string)))
|
||||
res = putenv(s);
|
||||
if (res)
|
||||
fprintf(stdout, "read: %s\n", strerror(errno));
|
||||
}
|
||||
else
|
||||
fgets(string, sizeof(string), stdin);
|
||||
|
||||
return (res);
|
||||
}
|
||||
|
||||
/* Built-in '.' handler (read-in and execute commands from file) */
|
||||
static int shell_source(struct job *cmd, struct jobSet *junk)
|
||||
{
|
||||
@ -461,7 +497,7 @@ static void globLastArgument(struct childProgram *prog, int *argcPtr,
|
||||
int rc;
|
||||
int flags;
|
||||
int i;
|
||||
char *src, *dst;
|
||||
char *src, *dst, *var;
|
||||
|
||||
if (argc > 1) { /* cmd->globResult is already initialized */
|
||||
flags = GLOB_APPEND;
|
||||
@ -471,6 +507,9 @@ static void globLastArgument(struct childProgram *prog, int *argcPtr,
|
||||
flags = 0;
|
||||
i = 0;
|
||||
}
|
||||
/* do shell variable substitution */
|
||||
if(*prog->argv[argc - 1] == '$' && (var = getenv(prog->argv[argc - 1] + 1)))
|
||||
prog->argv[argc - 1] = var;
|
||||
|
||||
rc = glob(prog->argv[argc - 1], flags, NULL, &prog->globResult);
|
||||
if (rc == GLOB_NOSPACE) {
|
||||
@ -535,12 +574,13 @@ static int parseCommand(char **commandPtr, struct job *job, int *isBg)
|
||||
job->progs = malloc(sizeof(*job->progs));
|
||||
|
||||
/* We set the argv elements to point inside of this string. The
|
||||
memory is freed by freeJob().
|
||||
memory is freed by freeJob(). Allocate twice the original
|
||||
length in case we need to quote every single character.
|
||||
|
||||
Getting clean memory relieves us of the task of NULL
|
||||
terminating things and makes the rest of this look a bit
|
||||
cleaner (though it is, admittedly, a tad less efficient) */
|
||||
job->cmdBuf = command = calloc(1, strlen(*commandPtr) + 1);
|
||||
job->cmdBuf = command = calloc(1, 2*strlen(*commandPtr) + 1);
|
||||
job->text = NULL;
|
||||
|
||||
prog = job->progs;
|
||||
@ -583,9 +623,8 @@ static int parseCommand(char **commandPtr, struct job *job, int *isBg)
|
||||
sizeof(*prog->argv) *
|
||||
argvAlloced);
|
||||
}
|
||||
prog->argv[argc] = buf;
|
||||
|
||||
globLastArgument(prog, &argc, &argvAlloced);
|
||||
prog->argv[argc] = buf;
|
||||
}
|
||||
} else
|
||||
switch (*src) {
|
||||
@ -615,6 +654,7 @@ static int parseCommand(char **commandPtr, struct job *job, int *isBg)
|
||||
if (*chptr && *prog->argv[argc]) {
|
||||
buf++, argc++;
|
||||
globLastArgument(prog, &argc, &argvAlloced);
|
||||
prog->argv[argc] = buf;
|
||||
}
|
||||
}
|
||||
|
||||
@ -749,7 +789,7 @@ static int runCommand(struct job newJob, struct jobSet *jobList, int inBg)
|
||||
int nextin, nextout;
|
||||
int pipefds[2]; /* pipefd[0] is for reading */
|
||||
struct builtInCommand *x;
|
||||
#ifdef BB_FEATURE_STANDALONE_SHELL
|
||||
#ifdef BB_FEATURE_SH_STANDALONE_SHELL
|
||||
const struct BB_applet *a = applets;
|
||||
#endif
|
||||
|
||||
@ -792,7 +832,7 @@ static int runCommand(struct job newJob, struct jobSet *jobList, int inBg)
|
||||
exit (x->function(&newJob, jobList));
|
||||
}
|
||||
}
|
||||
#ifdef BB_FEATURE_STANDALONE_SHELL
|
||||
#ifdef BB_FEATURE_SH_STANDALONE_SHELL
|
||||
/* Handle busybox internals here */
|
||||
while (a->name != 0) {
|
||||
if (strcmp(newJob.progs[i].argv[0], a->name) == 0) {
|
||||
@ -984,6 +1024,14 @@ static int busy_loop(FILE * input)
|
||||
if (tcsetpgrp(0, parent_pgrp))
|
||||
perror("tcsetpgrp");
|
||||
|
||||
/* return controlling TTY back to parent process group before exiting */
|
||||
if (tcsetpgrp(0, parent_pgrp))
|
||||
perror("tcsetpgrp");
|
||||
|
||||
/* return exit status if called with "-c" */
|
||||
if (input == NULL && WIFEXITED(status))
|
||||
return WEXITSTATUS(status);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -993,7 +1041,11 @@ int shell_main(int argc, char **argv)
|
||||
FILE *input = stdin;
|
||||
|
||||
/* initialize the cwd */
|
||||
getcwd(cwd, sizeof(cwd));
|
||||
cwd = (char *) calloc(BUFSIZ, sizeof(char));
|
||||
if (cwd == 0) {
|
||||
fatalError("sh: out of memory\n");
|
||||
}
|
||||
getcwd(cwd, sizeof(char)*BUFSIZ);
|
||||
|
||||
#ifdef BB_FEATURE_SH_COMMAND_EDITING
|
||||
cmdedit_init();
|
||||
@ -1018,10 +1070,13 @@ int shell_main(int argc, char **argv)
|
||||
for(i=2; i<argc; i++)
|
||||
{
|
||||
if (strlen(local_pending_command) + strlen(argv[i]) >= BUFSIZ) {
|
||||
fatalError("sh: commands for -c option too long\n");
|
||||
local_pending_command = realloc(local_pending_command,
|
||||
strlen(local_pending_command) + strlen(argv[i]));
|
||||
if (local_pending_command==NULL)
|
||||
fatalError("sh: commands for -c option too long\n");
|
||||
}
|
||||
strcat(local_pending_command, argv[i]);
|
||||
if (i + 1 < argc)
|
||||
if ( (i + 1) < argc)
|
||||
strcat(local_pending_command, " ");
|
||||
}
|
||||
input = NULL;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user