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Add a "prefix" builtin for setting GS/OS prefixes

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This commit is contained in:
Stephen Heumann 2014-12-22 11:18:38 -06:00
parent c37319db8a
commit cdad130f39
1 changed files with 41 additions and 0 deletions
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41
shell/hush.c
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@ -110,6 +110,7 @@
#endif
#ifdef __GNO__
# include <gsos.h>
# define setpgid setpgid_is_broken_on_gno_206
/* setpgid is broken in GNO 2.0.6: It doesn't actually change the pgrp for
* the process (but it does update the pgrp reference counts, effectively
@ -933,6 +934,9 @@ static int builtin_continue(char **argv) FAST_FUNC;
#if ENABLE_HUSH_FUNCTIONS
static int builtin_return(char **argv) FAST_FUNC;
#endif
#ifdef __GNO__
static int builtin_prefix(char **argv) FAST_FUNC;
#endif
/* Table of built-in functions. They can be forked or not, depending on
* context: within pipes, they fork. As simple commands, they do not.
@ -1004,6 +1008,9 @@ static const struct built_in_command bltins1[] = {
BLTIN("umask" , builtin_umask , "Set file creation mask"),
BLTIN("unset" , builtin_unset , "Unset variables"),
BLTIN("wait" , builtin_wait , "Wait for process"),
#ifdef __GNO__
BLTIN("prefix" , builtin_prefix , "Set GS/OS prefixes"),
#endif
};
/* For now, echo and test are unconditionally enabled.
* Maybe make it configurable? */
@ -9731,3 +9738,37 @@ static int FAST_FUNC builtin_return(char **argv)
return rc;
}
#endif
#ifdef __GNO__
static int FAST_FUNC builtin_prefix(char **argv)
{
unsigned prefix;
PrefixRecGS prefixrec;
if (!argv[1] || !argv[2] || argv[3]) {
bb_error_msg("%s: invalid arguments", argv[0]);
return EXIT_FAILURE;
}
errno = 0;
prefix = bb_strtou(argv[1], NULL, 10);
if (errno || prefix > 31) {
bb_error_msg("%s: invalid prefix number '%s'", argv[0], argv[1]);
return EXIT_FAILURE;
}
prefixrec.pCount = 2;
prefixrec.prefixNum = prefix;
prefixrec.buffer.setPrefix = __C2GSMALLOC(argv[2]);
if (prefixrec.buffer.setPrefix == NULL) {
bb_error_msg("%s: memory allocation failure", argv[0]);
return EXIT_FAILURE;
}
SetPrefix(&prefixrec);
GIfree(prefixrec.buffer.setPrefix);
return EXIT_SUCCESS;
}
#endif