version 1.62, 2007/10/27 08:44:12 |
version 1.63, 2007/11/02 17:27:24 |
|
|
* SUCH DAMAGE. |
* SUCH DAMAGE. |
*/ |
*/ |
|
|
#include <sys/types.h> |
|
#include <sys/stat.h> |
|
#include <sys/wait.h> |
|
#include <ctype.h> |
|
#include <errno.h> |
|
#include <limits.h> |
#include <limits.h> |
#include <signal.h> |
#include <signal.h> |
#include <stddef.h> |
|
#include <stdio.h> |
#include <stdio.h> |
#include <stdlib.h> |
#include <stdlib.h> |
#include <string.h> |
|
#include <unistd.h> |
|
#include "config.h" |
#include "config.h" |
#include "defines.h" |
#include "defines.h" |
#include "dir.h" |
#include "dir.h" |
|
|
#include "var.h" |
#include "var.h" |
#include "targ.h" |
#include "targ.h" |
#include "error.h" |
#include "error.h" |
#include "str.h" |
|
#include "extern.h" |
#include "extern.h" |
#include "memory.h" |
|
#include "gnode.h" |
#include "gnode.h" |
#include "make.h" |
|
#include "timestamp.h" |
#include "timestamp.h" |
#include "lst.h" |
#include "lst.h" |
#include "pathnames.h" |
|
|
|
static void CompatInterrupt(int); |
|
static int CompatRunCommand(LstNode, void *); |
|
static void CompatMake(void *, void *); |
static void CompatMake(void *, void *); |
static int run_gnode(GNode *); |
|
static void setup_meta(void); |
|
static char **recheck_command_for_shell(char **); |
|
static void run_command(const char *, bool); |
|
|
|
static volatile sig_atomic_t interrupted; |
|
|
|
static void |
|
CompatInterrupt(int signo) |
|
{ |
|
if (interrupted != SIGINT) |
|
interrupted = signo; |
|
} |
|
|
|
/* The following array is used to make a fast determination of which |
|
* characters are interpreted specially by the shell. If a command |
|
* contains any of these characters, it is executed by the shell, not |
|
* directly by us. */ |
|
static char meta[256]; |
|
|
|
static void |
|
setup_meta(void) |
|
{ |
|
char *p; |
|
|
|
for (p = "#=|^(){};&<>*?[]:$`\\\n"; *p != '\0'; p++) |
|
meta[(unsigned char) *p] = 1; |
|
/* The null character serves as a sentinel in the string. */ |
|
meta[0] = 1; |
|
} |
|
|
|
static char ** |
|
recheck_command_for_shell(char **av) |
|
{ |
|
char *runsh[] = { |
|
"alias", "cd", "eval", "exit", "read", "set", "ulimit", |
|
"unalias", "unset", "wait", "umask", NULL |
|
}; |
|
|
|
char **p; |
|
|
|
/* optimization: if exec cmd, we avoid the intermediate shell */ |
|
if (strcmp(av[0], "exec") == 0) |
|
av++; |
|
|
|
for (p = runsh; *p; p++) |
|
if (strcmp(av[0], *p) == 0) |
|
return NULL; |
|
|
|
return av; |
|
} |
|
|
|
static void |
|
run_command(const char *cmd, bool errCheck) |
|
{ |
|
const char *p; |
|
char *shargv[4]; |
|
char **todo; |
|
|
|
shargv[0] = _PATH_BSHELL; |
|
|
|
shargv[1] = errCheck ? "-ec" : "-c"; |
|
shargv[2] = (char *)cmd; |
|
shargv[3] = NULL; |
|
|
|
todo = shargv; |
|
|
|
|
|
/* Search for meta characters in the command. If there are no meta |
|
* characters, there's no need to execute a shell to execute the |
|
* command. */ |
|
for (p = cmd; !meta[(unsigned char)*p]; p++) |
|
continue; |
|
if (*p == '\0') { |
|
char *bp; |
|
char **av; |
|
int argc; |
|
/* No meta-characters, so probably no need to exec a shell. |
|
* Break the command into words to form an argument vector |
|
* we can execute. */ |
|
av = brk_string(cmd, &argc, &bp); |
|
av = recheck_command_for_shell(av); |
|
if (av != NULL) |
|
todo = av; |
|
} |
|
execvp(todo[0], todo); |
|
|
|
if (errno == ENOENT) |
|
fprintf(stderr, "%s: not found\n", todo[0]); |
|
else |
|
perror(todo[0]); |
|
_exit(1); |
|
} |
|
|
|
/*- |
/*- |
*----------------------------------------------------------------------- |
*----------------------------------------------------------------------- |
* CompatRunCommand -- |
|
* Execute the next command for a target. If the command returns an |
|
* error, the node's made field is set to ERROR and creation stops. |
|
* |
|
* Results: |
|
* 0 in case of error, 1 if ok. |
|
* |
|
* Side Effects: |
|
* The node's 'made' field may be set to ERROR. |
|
*----------------------------------------------------------------------- |
|
*/ |
|
static int |
|
CompatRunCommand(LstNode cmdNode, /* Command to execute */ |
|
void *gnp) /* Node from which the command came */ |
|
{ |
|
char *cmdStart; /* Start of expanded command */ |
|
bool silent; /* Don't print command */ |
|
bool doExecute; /* Execute the command */ |
|
bool errCheck; /* Check errors */ |
|
int reason; /* Reason for child's death */ |
|
int status; /* Description of child's death */ |
|
pid_t cpid; /* Child actually found */ |
|
pid_t stat; /* Status of fork */ |
|
char *cmd = (char *)Lst_Datum(cmdNode); |
|
GNode *gn = (GNode *)gnp; |
|
|
|
silent = gn->type & OP_SILENT; |
|
errCheck = !(gn->type & OP_IGNORE); |
|
doExecute = !noExecute; |
|
|
|
cmdStart = Var_Subst(cmd, &gn->context, false); |
|
|
|
/* How can we execute a null command ? we warn the user that the |
|
* command expanded to nothing (is this the right thing to do?). */ |
|
if (*cmdStart == '\0') { |
|
free(cmdStart); |
|
Error("%s expands to empty string", cmd); |
|
return 1; |
|
} else |
|
cmd = cmdStart; |
|
|
|
if ((gn->type & OP_SAVE_CMDS) && (gn != end_node)) { |
|
Lst_AtEnd(&end_node->commands, cmdStart); |
|
end_node->type &= ~OP_DUMMY; |
|
return 1; |
|
} else if (strcmp(cmdStart, "...") == 0) { |
|
gn->type |= OP_SAVE_CMDS; |
|
return 1; |
|
} |
|
for (;; cmd++) { |
|
if (*cmd == '@') |
|
silent = DEBUG(LOUD) ? false : true; |
|
else if (*cmd == '-') |
|
errCheck = false; |
|
else if (*cmd == '+') |
|
doExecute = true; |
|
else |
|
break; |
|
} |
|
while (isspace(*cmd)) |
|
cmd++; |
|
/* Print the command before echoing if we're not supposed to be quiet |
|
* for this one. We also print the command if -n given. */ |
|
if (!silent || noExecute) { |
|
printf("%s\n", cmd); |
|
fflush(stdout); |
|
} |
|
/* If we're not supposed to execute any commands, this is as far as |
|
* we go... */ |
|
if (!doExecute) |
|
return 1; |
|
|
|
/* Fork and execute the single command. If the fork fails, we abort. */ |
|
switch (cpid = fork()) { |
|
case -1: |
|
Fatal("Could not fork"); |
|
/*NOTREACHED*/ |
|
case 0: |
|
run_command(cmd, errCheck); |
|
/*NOTREACHED*/ |
|
default: |
|
break; |
|
} |
|
free(cmdStart); |
|
|
|
/* The child is off and running. Now all we can do is wait... */ |
|
while (1) { |
|
|
|
while ((stat = wait(&reason)) != cpid) { |
|
if (stat == -1 && errno != EINTR) |
|
break; |
|
} |
|
|
|
if (interrupted) |
|
break; |
|
|
|
if (stat != -1) { |
|
if (WIFSTOPPED(reason)) |
|
status = WSTOPSIG(reason); /* stopped */ |
|
else if (WIFEXITED(reason)) { |
|
status = WEXITSTATUS(reason); /* exited */ |
|
if (status != 0) |
|
printf("*** Error code %d", status); |
|
} else { |
|
status = WTERMSIG(reason); /* signaled */ |
|
printf("*** Signal %d", status); |
|
} |
|
|
|
|
|
if (!WIFEXITED(reason) || status != 0) { |
|
if (errCheck) { |
|
gn->made = ERROR; |
|
if (keepgoing) |
|
/* Abort the current target, |
|
* but let others continue. */ |
|
printf(" (continuing)\n"); |
|
} else { |
|
/* Continue executing commands for |
|
* this target. If we return 0, |
|
* this will happen... */ |
|
printf(" (ignored)\n"); |
|
status = 0; |
|
} |
|
} |
|
return !status; |
|
} else |
|
Fatal("error in wait: %d", stat); |
|
/*NOTREACHED*/ |
|
} |
|
|
|
/* This is reached only if interrupted */ |
|
if (!Targ_Precious(gn)) { |
|
char *file = Varq_Value(TARGET_INDEX, gn); |
|
|
|
if (!noExecute && eunlink(file) != -1) |
|
Error("*** %s removed\n", file); |
|
} |
|
if (interrupted == SIGINT) { |
|
signal(SIGINT, SIG_IGN); |
|
signal(SIGTERM, SIG_IGN); |
|
signal(SIGHUP, SIG_IGN); |
|
signal(SIGQUIT, SIG_IGN); |
|
interrupted = 0; |
|
run_gnode(interrupt_node); |
|
exit(SIGINT); |
|
} |
|
exit(interrupted); |
|
} |
|
|
|
static int |
|
run_gnode(GNode *gn) |
|
{ |
|
if (gn != NULL && (gn->type & OP_DUMMY) == 0) { |
|
Lst_ForEachNodeWhile(&gn->commands, CompatRunCommand, gn); |
|
return gn->made; |
|
} else |
|
return NOSUCHNODE; |
|
} |
|
|
|
/*- |
|
*----------------------------------------------------------------------- |
|
* CompatMake -- |
* CompatMake -- |
* Make a target. |
* Make a target. |
* |
* |
|
|
GNode *gn = (GNode *)gnp; |
GNode *gn = (GNode *)gnp; |
GNode *pgn = (GNode *)pgnp; |
GNode *pgn = (GNode *)pgnp; |
|
|
|
look_harder_for_target(gn); |
|
|
if (pgn->type & OP_MADE) { |
if (pgn->type & OP_MADE) { |
(void)Dir_MTime(gn); |
(void)Dir_MTime(gn); |
gn->made = UPTODATE; |
gn->made = UPTODATE; |
|
|
/* Our commands are ok, but we still have to worry |
/* Our commands are ok, but we still have to worry |
* about the -t flag... */ |
* about the -t flag... */ |
if (!touchFlag) |
if (!touchFlag) |
run_gnode(gn); |
run_gnode(gn, 0); |
else |
else |
Job_Touch(gn, gn->type & OP_SILENT); |
Job_Touch(gn, gn->type & OP_SILENT); |
} else |
} else |
|
|
GNode *gn = NULL; /* Current root target */ |
GNode *gn = NULL; /* Current root target */ |
int errors; /* Number of targets not remade due to errors */ |
int errors; /* Number of targets not remade due to errors */ |
|
|
signal(SIGINT, CompatInterrupt); |
setup_engine(); |
signal(SIGTERM, CompatInterrupt); |
|
signal(SIGHUP, CompatInterrupt); |
|
signal(SIGQUIT, CompatInterrupt); |
|
|
|
setup_meta(); |
|
/* If the user has defined a .BEGIN target, execute the commands |
/* If the user has defined a .BEGIN target, execute the commands |
* attached to it. */ |
* attached to it. */ |
if (!queryFlag) { |
if (!queryFlag) { |
if (run_gnode(begin_node) == ERROR) { |
if (run_gnode(begin_node, 0) == ERROR) { |
printf("\n\nStop.\n"); |
printf("\n\nStop.\n"); |
exit(1); |
exit(1); |
} |
} |
|
|
|
|
/* If the user has defined a .END target, run its commands. */ |
/* If the user has defined a .END target, run its commands. */ |
if (errors == 0) |
if (errors == 0) |
run_gnode(end_node); |
run_gnode(end_node, 0); |
} |
} |