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authorAl Viro <viro@zeniv.linux.org.uk>2018-12-10 03:40:11 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2018-12-10 03:40:11 -0500
commita40612ef0ee1e524aafee58d0e5713cf5fdb3d62 (patch)
treed91ab06356cb2ffa1b49320127ed35a948c33d98 /scripts/selinux/genheaders/genheaders.c
parentLinux 4.20-rc1 (diff)
downloadlinux-dev-a40612ef0ee1e524aafee58d0e5713cf5fdb3d62.tar.xz
linux-dev-a40612ef0ee1e524aafee58d0e5713cf5fdb3d62.zip
genheaders: %-<width>s had been there since v6; %-*s - since v7
Please, use at least K&R C; printf had been able to left-adjust a field for as long as stdio existed and use of '*' for variable width had been there since v7. Yes, the first edition of K&R didn't cover the latter feature (it slightly predates v7), but you are using a much later feature of the language than that - in K&R C static char *stoupperx(const char *s) { ... } would've been spelled as static char *stoupperx(s) char *s; { ... } While we are at it, the use of strstr() is bogus - it finds the _first_ instance of substring, so it's a lousy fit for checking if a string ends with given suffix... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to '')
-rw-r--r--scripts/selinux/genheaders/genheaders.c29
1 files changed, 9 insertions, 20 deletions
diff --git a/scripts/selinux/genheaders/genheaders.c b/scripts/selinux/genheaders/genheaders.c
index fa48fabcb330..1ceedea847dd 100644
--- a/scripts/selinux/genheaders/genheaders.c
+++ b/scripts/selinux/genheaders/genheaders.c
@@ -19,8 +19,6 @@ struct security_class_mapping {
#include "classmap.h"
#include "initial_sid_to_string.h"
-#define max(x, y) (((int)(x) > (int)(y)) ? x : y)
-
const char *progname;
static void usage(void)
@@ -46,11 +44,9 @@ static char *stoupperx(const char *s)
int main(int argc, char *argv[])
{
- int i, j, k;
+ int i, j;
int isids_len;
FILE *fout;
- const char *needle = "SOCKET";
- char *substr;
progname = argv[0];
@@ -80,20 +76,14 @@ int main(int argc, char *argv[])
for (i = 0; secclass_map[i].name; i++) {
struct security_class_mapping *map = &secclass_map[i];
- fprintf(fout, "#define SECCLASS_%s", map->name);
- for (j = 0; j < max(1, 40 - strlen(map->name)); j++)
- fprintf(fout, " ");
- fprintf(fout, "%2d\n", i+1);
+ fprintf(fout, "#define SECCLASS_%-39s %2d\n", map->name, i+1);
}
fprintf(fout, "\n");
for (i = 1; i < isids_len; i++) {
const char *s = initial_sid_to_string[i];
- fprintf(fout, "#define SECINITSID_%s", s);
- for (j = 0; j < max(1, 40 - strlen(s)); j++)
- fprintf(fout, " ");
- fprintf(fout, "%2d\n", i);
+ fprintf(fout, "#define SECINITSID_%-39s %2d\n", s, i);
}
fprintf(fout, "\n#define SECINITSID_NUM %d\n", i-1);
fprintf(fout, "\nstatic inline bool security_is_socket_class(u16 kern_tclass)\n");
@@ -101,9 +91,10 @@ int main(int argc, char *argv[])
fprintf(fout, "\tbool sock = false;\n\n");
fprintf(fout, "\tswitch (kern_tclass) {\n");
for (i = 0; secclass_map[i].name; i++) {
+ static char s[] = "SOCKET";
struct security_class_mapping *map = &secclass_map[i];
- substr = strstr(map->name, needle);
- if (substr && strcmp(substr, needle) == 0)
+ int len = strlen(map->name), l = sizeof(s) - 1;
+ if (len >= l && memcmp(map->name + len - l, s, l) == 0)
fprintf(fout, "\tcase SECCLASS_%s:\n", map->name);
}
fprintf(fout, "\t\tsock = true;\n");
@@ -129,17 +120,15 @@ int main(int argc, char *argv[])
for (i = 0; secclass_map[i].name; i++) {
struct security_class_mapping *map = &secclass_map[i];
+ int len = strlen(map->name);
for (j = 0; map->perms[j]; j++) {
if (j >= 32) {
fprintf(stderr, "Too many permissions to fit into an access vector at (%s, %s).\n",
map->name, map->perms[j]);
exit(5);
}
- fprintf(fout, "#define %s__%s", map->name,
- map->perms[j]);
- for (k = 0; k < max(1, 40 - strlen(map->name) - strlen(map->perms[j])); k++)
- fprintf(fout, " ");
- fprintf(fout, "0x%08xU\n", (1<<j));
+ fprintf(fout, "#define %s__%-*s 0x%08xU\n", map->name,
+ 39-len, map->perms[j], 1U<<j);
}
}