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Add 'sy_flags', a currently unused per-syscall entry flags field that will

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see future use in 9-CURRENT and 8-STABLE for features such as the
capability-mode enable flag and pay-as-you-audit.

Discussed with:	jhb, sson
This commit is contained in:
Robert Watson 2009-06-01 16:13:06 +00:00
parent 529cb8e371
commit 46c10f272c
2 changed files with 22 additions and 14 deletions

35
sys/kern/makesyscalls.sh

@ -318,6 +318,13 @@ s/\$//g
auditev = $2;
}
#
# The currently-empty flags field.
#
{
flags = "0";
}
$3 == "STD" || $3 == "NODEF" || $3 == "NOARGS" || $3 == "NOPROTO" \
|| $3 == "NOIMPL" || $3 == "NOSTD" {
parseline()
@ -369,14 +376,14 @@ s/\$//g
printf("\t{ %s, (sy_call_t *)", argssize) > sysent
column = 8 + 2 + length(argssize) + 15
if ($3 == "NOIMPL") {
printf("%s },", "nosys, AUE_NULL, NULL, 0, 0") > sysent
column = column + length("nosys") + 3
printf("%s },", "nosys, AUE_NULL, NULL, 0, 0, 0") > sysent
column = column + length("nosys") + length("AUE_NULL") + 3
} else if ($3 == "NOSTD") {
printf("%s },", "lkmressys, AUE_NULL, NULL, 0, 0") > sysent
column = column + length("lkmressys") + 3
printf("%s },", "lkmressys, AUE_NULL, NULL, 0, 0, 0") > sysent
column = column + length("lkmressys") + length("AUE_NULL") + 3
} else {
printf("%s, %s, NULL, 0, 0 },", funcname, auditev) > sysent
column = column + length(funcname) + length(auditev) + 3
printf("%s, %s, NULL, 0, 0, %s },", funcname, auditev, flags) > sysent
column = column + length(funcname) + length(auditev) + length(flags) + 3
}
align_sysent_comment(column)
printf("/* %d = %s */\n", syscall, funcalias) > sysent
@ -426,10 +433,10 @@ s/\$//g
argalias) > sysarg
printf("%s\t%s%s(struct thread *, struct %s *);\n",
rettype, prefix, funcname, argalias) > outdcl
printf("\t{ %s(%s,%s), %s, NULL, 0, 0 },",
wrap, argssize, funcname, auditev) > sysent
printf("\t{ %s(%s,%s), %s, NULL, 0, 0, %s },",
wrap, argssize, funcname, auditev, flags) > sysent
align_sysent_comment(8 + 9 + \
length(argssize) + 1 + length(funcname) + length(auditev) + 4)
length(argssize) + 1 + length(funcname) + length(auditev) + length(flags) + 4)
printf("/* %d = old %s */\n", syscall, funcalias) > sysent
printf("\t\"%s.%s\",\t\t/* %d = old %s */\n",
wrap, funcalias, syscall, funcalias) > sysnames
@ -448,10 +455,10 @@ s/\$//g
ncompat++
parseline()
printf("%s\to%s();\n", rettype, funcname) > syscompatdcl
printf("\t{ compat(%s,%s), %s, NULL, 0, 0 },",
argssize, funcname, auditev) > sysent
printf("\t{ compat(%s,%s), %s, NULL, 0, 0, %s },",
argssize, funcname, auditev, flags) > sysent
align_sysent_comment(8 + 9 + \
length(argssize) + 1 + length(funcname) + length(auditev) + 4)
length(argssize) + 1 + length(funcname) + length(auditev) + length(flags) + 4)
printf("/* %d = old %s */\n", syscall, funcalias) > sysent
printf("\t\"old.%s\",\t\t/* %d = old %s */\n",
funcalias, syscall, funcalias) > sysnames
@ -462,7 +469,7 @@ s/\$//g
next
}
$3 == "OBSOL" {
printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0 },") > sysent
printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0 },") > sysent
align_sysent_comment(34)
printf("/* %d = obsolete %s */\n", syscall, comment) > sysent
printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n",
@ -473,7 +480,7 @@ s/\$//g
next
}
$3 == "UNIMPL" {
printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0 },\t\t\t/* %d = %s */\n",
printf("\t{ 0, (sy_call_t *)nosys, AUE_NULL, NULL, 0, 0, 0 },\t\t\t/* %d = %s */\n",
syscall, comment) > sysent
printf("\t\"#%d\",\t\t\t/* %d = %s */\n",
syscall, syscall, comment) > sysnames

1
sys/sys/sysent.h

@ -60,6 +60,7 @@ struct sysent { /* system call table */
/* optional argument conversion function. */
u_int32_t sy_entry; /* DTrace entry ID for systrace. */
u_int32_t sy_return; /* DTrace return ID for systrace. */
u_int32_t sy_flags; /* General flags for system calls. */
};
struct image_params;