308 lines
9.6 KiB
Diff
308 lines
9.6 KiB
Diff
diff --git a/builtins.h b/builtins.h
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--- a/builtins.h
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+++ b/builtins.h
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@@ -46,6 +46,7 @@
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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 ARRAYREF_BUILTIN 0x80 /* This builtin takes array references as arguments */
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+#define REQUIRES_BUILTIN 0x100 /* 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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--- a/builtins/mkbuiltins.c
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+++ b/builtins/mkbuiltins.c
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@@ -69,11 +69,16 @@ 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_ARRAYREF_ARG 0x10
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+#define BUILTIN_FLAG_REQUIRES 0x20
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#define BASE_INDENT 4
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@@ -189,13 +194,21 @@ char *arrayvar_builtins[] =
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"typeset", "unset", "wait", /*]*/
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(char *)NULL
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};
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-
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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_arrayvar_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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@@ -856,6 +869,8 @@ builtin_handler (self, defs, arg)
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new->flags |= BUILTIN_FLAG_POSIX_BUILTIN;
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if (is_arrayvar_builtin (name))
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new->flags |= BUILTIN_FLAG_ARRAYREF_ARG;
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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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@@ -1275,13 +1290,14 @@ 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, %s_doc,\n",
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+ fprintf (structfile, "%s%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_ARRAYREF_ARG) ? " | ARRAYREF_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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@@ -1678,6 +1694,13 @@ is_arrayvar_builtin (name)
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return (_find_in_table (name, arrayvar_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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--- 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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--- a/doc/bashref.texi
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+++ b/doc/bashref.texi
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@@ -6927,6 +6927,13 @@ 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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--- a/eval.c
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+++ b/eval.c
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@@ -138,7 +138,8 @@ 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 (last_command_exit_value);
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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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--- a/execute_cmd.c
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+++ b/execute_cmd.c
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@@ -561,6 +561,8 @@ 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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@@ -592,7 +594,13 @@ 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 (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 (last_command_exit_value);
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if (command == 0)
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return (EXECUTION_SUCCESS);
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@@ -2883,7 +2891,7 @@ 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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--- 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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--- 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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@@ -839,6 +841,30 @@ 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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@@ -856,6 +882,28 @@ 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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--- a/shell.c
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+++ b/shell.c
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@@ -196,6 +196,9 @@ 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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@@ -266,6 +269,7 @@ 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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@@ -510,6 +514,12 @@ main (argc, argv, env)
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read_but_dont_execute = 1;
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#endif
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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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--- a/shell.h
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+++ b/shell.h
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@@ -100,6 +100,7 @@ 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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