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312 lines
9.7 KiB
312 lines
9.7 KiB
diff --git a/builtins.h b/builtins.h |
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index dac95fd..5b7e811 100644 |
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--- a/builtins.h |
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+++ b/builtins.h |
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@@ -45,6 +45,7 @@ |
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#define ASSIGNMENT_BUILTIN 0x10 /* This builtin takes assignment statements. */ |
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#define POSIX_BUILTIN 0x20 /* This builtins is special in the Posix command search order. */ |
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#define LOCALVAR_BUILTIN 0x40 /* This builtin creates local variables */ |
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+#define REQUIRES_BUILTIN 0x80 /* This builtin requires other files. */ |
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#define BASE_INDENT 4 |
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diff --git a/builtins/mkbuiltins.c b/builtins/mkbuiltins.c |
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index e243021..0a7a0e5 100644 |
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--- a/builtins/mkbuiltins.c |
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+++ b/builtins/mkbuiltins.c |
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@@ -69,10 +69,15 @@ extern char *strcpy (); |
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#define whitespace(c) (((c) == ' ') || ((c) == '\t')) |
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/* Flag values that builtins can have. */ |
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+/* These flags are for the C code generator, |
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+ the C which is produced (./builtin.c) |
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+ includes the flags definitions found |
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+ in ../builtins.h */ |
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#define BUILTIN_FLAG_SPECIAL 0x01 |
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#define BUILTIN_FLAG_ASSIGNMENT 0x02 |
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#define BUILTIN_FLAG_LOCALVAR 0x04 |
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#define BUILTIN_FLAG_POSIX_BUILTIN 0x08 |
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+#define BUILTIN_FLAG_REQUIRES 0x10 |
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#define BASE_INDENT 4 |
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@@ -173,11 +178,19 @@ char *posix_builtins[] = |
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(char *)NULL |
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}; |
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+/* The builtin commands that cause requirements on other files. */ |
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+static char *requires_builtins[] = |
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+{ |
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+ ".", "command", "exec", "source", "inlib", |
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+ (char *)NULL |
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+}; |
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+ |
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/* Forward declarations. */ |
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static int is_special_builtin (); |
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static int is_assignment_builtin (); |
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static int is_localvar_builtin (); |
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static int is_posix_builtin (); |
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+static int is_requires_builtin (); |
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#if !defined (HAVE_RENAME) |
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static int rename (); |
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@@ -831,6 +844,8 @@ builtin_handler (self, defs, arg) |
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new->flags |= BUILTIN_FLAG_LOCALVAR; |
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if (is_posix_builtin (name)) |
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new->flags |= BUILTIN_FLAG_POSIX_BUILTIN; |
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+ if (is_requires_builtin (name)) |
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+ new->flags |= BUILTIN_FLAG_REQUIRES; |
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array_add ((char *)new, defs->builtins); |
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building_builtin = 1; |
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@@ -1250,12 +1265,13 @@ write_builtins (defs, structfile, externfile) |
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else |
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fprintf (structfile, "(sh_builtin_func_t *)0x0, "); |
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- fprintf (structfile, "%s%s%s%s%s, %s_doc,\n", |
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+ fprintf (structfile, "%s%s%s%s%s%s, %s_doc,\n", |
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"BUILTIN_ENABLED | STATIC_BUILTIN", |
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(builtin->flags & BUILTIN_FLAG_SPECIAL) ? " | SPECIAL_BUILTIN" : "", |
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(builtin->flags & BUILTIN_FLAG_ASSIGNMENT) ? " | ASSIGNMENT_BUILTIN" : "", |
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(builtin->flags & BUILTIN_FLAG_LOCALVAR) ? " | LOCALVAR_BUILTIN" : "", |
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(builtin->flags & BUILTIN_FLAG_POSIX_BUILTIN) ? " | POSIX_BUILTIN" : "", |
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+ (builtin->flags & BUILTIN_FLAG_REQUIRES) ? " | REQUIRES_BUILTIN" : "", |
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document_name (builtin)); |
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/* Don't translate short document summaries that are identical |
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@@ -1645,6 +1661,13 @@ is_posix_builtin (name) |
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return (_find_in_table (name, posix_builtins)); |
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} |
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+static int |
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+is_requires_builtin (name) |
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+ char *name; |
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+{ |
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+ return (_find_in_table (name, requires_builtins)); |
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+} |
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+ |
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#if !defined (HAVE_RENAME) |
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static int |
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rename (from, to) |
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diff --git a/doc/bash.1 b/doc/bash.1 |
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index 5af7d42..7539368 100644 |
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--- a/doc/bash.1 |
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+++ b/doc/bash.1 |
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@@ -239,6 +239,14 @@ The shell becomes restricted (see |
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.B "RESTRICTED SHELL" |
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below). |
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.TP |
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+.B \-\-rpm-requires |
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+Produce the list of files that are required for the |
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+shell script to run. This implies '-n' and is subject |
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+to the same limitations as compile time error checking checking; |
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+Command substitutions, Conditional expressions and |
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+.BR eval |
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+builtin are not parsed so some dependencies may be missed. |
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+.TP |
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.B \-\-verbose |
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Equivalent to \fB\-v\fP. |
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.TP |
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diff --git a/doc/bashref.texi b/doc/bashref.texi |
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index 9e23f58..d02151e 100644 |
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--- a/doc/bashref.texi |
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+++ b/doc/bashref.texi |
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@@ -6554,6 +6554,13 @@ standard. @xref{Bash POSIX Mode}, for a description of the Bash |
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@item --restricted |
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Make the shell a restricted shell (@pxref{The Restricted Shell}). |
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+@item --rpm-requires |
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+Produce the list of files that are required for the |
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+shell script to run. This implies '-n' and is subject |
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+to the same limitations as compile time error checking checking; |
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+Command substitutions, Conditional expressions and @command{eval} |
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+are not parsed so some dependencies may be missed. |
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+ |
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@item --verbose |
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Equivalent to @option{-v}. Print shell input lines as they're read. |
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diff --git a/eval.c b/eval.c |
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index 1d967da..f197033 100644 |
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--- a/eval.c |
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+++ b/eval.c |
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@@ -137,7 +137,8 @@ reader_loop () |
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if (read_command () == 0) |
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{ |
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- if (interactive_shell == 0 && read_but_dont_execute) |
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+ |
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+ if (interactive_shell == 0 && (read_but_dont_execute && !rpm_requires)) |
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{ |
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set_exit_status (EXECUTION_SUCCESS); |
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dispose_command (global_command); |
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diff --git a/execute_cmd.c b/execute_cmd.c |
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index d2555ad..397e283 100644 |
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--- a/execute_cmd.c |
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+++ b/execute_cmd.c |
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@@ -543,6 +543,8 @@ async_redirect_stdin () |
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#define DESCRIBE_PID(pid) do { if (interactive) describe_pid (pid); } while (0) |
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+extern int rpm_requires; |
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+ |
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/* Execute the command passed in COMMAND, perhaps doing it asynchronously. |
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COMMAND is exactly what read_command () places into GLOBAL_COMMAND. |
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ASYNCHRONOUS, if non-zero, says to do this command in the background. |
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@@ -574,7 +576,13 @@ execute_command_internal (command, asynchronous, pipe_in, pipe_out, |
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if (breaking || continuing) |
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return (last_command_exit_value); |
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- if (command == 0 || read_but_dont_execute) |
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+ if (command == 0 || (read_but_dont_execute && !rpm_requires)) |
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+ return (EXECUTION_SUCCESS); |
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+ if (rpm_requires && command->type == cm_function_def) |
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+ return last_command_exit_value = |
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+ execute_intern_function (command->value.Function_def->name, |
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+ command->value.Function_def); |
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+ if (read_but_dont_execute) |
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return (EXECUTION_SUCCESS); |
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QUIT; |
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@@ -2836,7 +2844,7 @@ execute_for_command (for_command) |
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save_line_number = line_number; |
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if (check_identifier (for_command->name, 1) == 0) |
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{ |
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- if (posixly_correct && interactive_shell == 0) |
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+ if (posixly_correct && interactive_shell == 0 && rpm_requires == 0) |
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{ |
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last_command_exit_value = EX_BADUSAGE; |
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jump_to_top_level (ERREXIT); |
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diff --git a/execute_cmd.h b/execute_cmd.h |
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index 465030a..9c7fd1c 100644 |
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--- a/execute_cmd.h |
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+++ b/execute_cmd.h |
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@@ -22,6 +22,9 @@ |
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#define _EXECUTE_CMD_H_ |
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#include "stdc.h" |
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+#include "variables.h" |
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+#include "command.h" |
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+ |
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#if defined (ARRAY_VARS) |
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struct func_array_state |
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diff --git a/make_cmd.c b/make_cmd.c |
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index 2d7ac96..ac53526 100644 |
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--- a/make_cmd.c |
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+++ b/make_cmd.c |
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@@ -35,6 +35,8 @@ |
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#include "bashintl.h" |
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#include "shell.h" |
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+#include "builtins.h" |
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+#include "builtins/common.h" |
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#include "execute_cmd.h" |
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#include "parser.h" |
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#include "flags.h" |
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@@ -828,6 +830,30 @@ make_coproc_command (name, command) |
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return (make_command (cm_coproc, (SIMPLE_COM *)temp)); |
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} |
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+static void |
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+output_requirement (deptype, filename) |
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+const char *deptype; |
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+char *filename; |
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+{ |
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+ static char *alphabet_set = "abcdefghijklmnopqrstuvwxyz" |
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+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; |
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+ |
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+ if (strchr(filename, '$') || (filename[0] != '/' && strchr(filename, '/'))) |
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+ return; |
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+ |
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+ /* |
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+ if the executable is called via variable substitution we can |
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+ not dermine what it is at compile time. |
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+ |
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+ if the executable consists only of characters not in the |
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+ alphabet we do not consider it a dependency just an artifact |
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+ of shell parsing (ex "exec < ${infile}"). |
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+ */ |
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+ |
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+ if (strpbrk(filename, alphabet_set)) |
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+ printf ("%s(%s)\n", deptype, filename); |
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+} |
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+ |
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/* Reverse the word list and redirection list in the simple command |
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has just been parsed. It seems simpler to do this here the one |
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time then by any other method that I can think of. */ |
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@@ -845,6 +871,28 @@ clean_simple_command (command) |
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REVERSE_LIST (command->value.Simple->redirects, REDIRECT *); |
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} |
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+ if (rpm_requires && command->value.Simple->words) |
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+ { |
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+ char *cmd0; |
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+ char *cmd1; |
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+ struct builtin *b; |
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+ |
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+ cmd0 = command->value.Simple->words->word->word; |
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+ b = builtin_address_internal (cmd0, 0); |
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+ cmd1 = 0; |
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+ if (command->value.Simple->words->next) |
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+ cmd1 = command->value.Simple->words->next->word->word; |
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+ |
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+ if (b) { |
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+ if ( (b->flags & REQUIRES_BUILTIN) && cmd1) |
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+ output_requirement ("executable", cmd1); |
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+ } else { |
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+ if (!assignment(cmd0, 0)) |
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+ output_requirement (find_function(cmd0) ? "function" : "executable", cmd0); |
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+ } |
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+ } /*rpm_requires*/ |
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+ |
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+ |
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parser_state &= ~PST_REDIRLIST; |
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return (command); |
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} |
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diff --git a/shell.c b/shell.c |
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index ce8087f..7dcd000 100644 |
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--- a/shell.c |
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+++ b/shell.c |
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@@ -194,6 +194,9 @@ int have_devfd = 0; |
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/* The name of the .(shell)rc file. */ |
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static char *bashrc_file = DEFAULT_BASHRC; |
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+/* Non-zero if we are finding the scripts requirements. */ |
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+int rpm_requires; |
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+ |
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/* Non-zero means to act more like the Bourne shell on startup. */ |
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static int act_like_sh; |
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@@ -260,6 +263,7 @@ static const struct { |
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{ "protected", Int, &protected_mode, (char **)0x0 }, |
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#endif |
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{ "rcfile", Charp, (int *)0x0, &bashrc_file }, |
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+ { "rpm-requires", Int, &rpm_requires, (char **)0x0 }, |
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#if defined (RESTRICTED_SHELL) |
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{ "restricted", Int, &restricted, (char **)0x0 }, |
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#endif |
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@@ -502,6 +506,12 @@ main (argc, argv, env) |
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if (dump_translatable_strings) |
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read_but_dont_execute = 1; |
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+ if (rpm_requires) |
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+ { |
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+ read_but_dont_execute = 1; |
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+ initialize_shell_builtins (); |
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+ } |
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+ |
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if (running_setuid && privileged_mode == 0) |
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disable_priv_mode (); |
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diff --git a/shell.h b/shell.h |
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index 8b41792..29b0efb 100644 |
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--- a/shell.h |
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+++ b/shell.h |
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@@ -99,6 +99,7 @@ extern int interactive, interactive_shell; |
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extern int startup_state; |
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extern int reading_shell_script; |
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extern int shell_initialized; |
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+extern int rpm_requires; |
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extern int bash_argv_initialized; |
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extern int subshell_environment; |
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extern int current_command_number;
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