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(map_syscall_name_to_number): new function for finding the number

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of a syscall given the name on solaris
(k_hasafs): try using map_syscall_name_to_number


git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@5066 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Assar Westerlund
1998-07-07 23:39:43 +00:00
parent 29c5cba17e
commit 5696f50326
1 changed files with 59 additions and 4 deletions
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63
lib/kafs/afssys.c
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@@ -90,6 +90,40 @@ try_aix(void)
} }
#endif /* _AIX */ #endif /* _AIX */
/*
* This probably only works under Solaris and could get confused if
* there's a /etc/name_to_sysnum file.
*/
#define _PATH_ETC_NAME_TO_SYSNUM "/etc/name_to_sysnum"
static int
map_syscall_name_to_number (const char *str, int *res)
{
FILE *f;
char buf[256];
size_t str_len = strlen (str);
f = fopen (_PATH_ETC_NAME_TO_SYSNUM, "r");
if (f == NULL)
return -1;
while (fgets (buf, sizeof(buf), f) != NULL) {
if (strncmp (str, buf, str_len) == 0) {
char *begptr = buf + str_len;
char *endptr;
long val = strtol (begptr, &endptr, 0);
if (val != 0 && endptr != begptr) {
fclose (f);
*res = val;
return 0;
}
}
}
fclose (f);
return -1;
}
#define NO_ENTRY_POINT 0 #define NO_ENTRY_POINT 0
#define SINGLE_ENTRY_POINT 1 #define SINGLE_ENTRY_POINT 1
#define MULTIPLE_ENTRY_POINT 2 #define MULTIPLE_ENTRY_POINT 2
@@ -252,7 +286,8 @@ k_hasafs(void)
char *env = getenv ("AFS_SYSCALL"); char *env = getenv ("AFS_SYSCALL");
/* /*
* Already checked presence of AFS syscalls? */ * Already checked presence of AFS syscalls?
*/
if (afs_entry_point != UNKNOWN_ENTRY_POINT) if (afs_entry_point != UNKNOWN_ENTRY_POINT)
return afs_entry_point != NO_ENTRY_POINT; return afs_entry_point != NO_ENTRY_POINT;
@@ -273,9 +308,29 @@ k_hasafs(void)
{ {
int tmp; int tmp;
if (env != NULL && sscanf (env, "%d", &tmp) == 1) if (env != NULL) {
if (try_one (tmp) == 0) if (sscanf (env, "%d", &tmp) == 1) {
goto done; if (try_one (tmp) == 0)
goto done;
} else {
char *end = NULL;
char *p;
char *s = strdup (env);
if (s != NULL) {
for (p = strtok_r (s, ",", &end);
p != NULL;
p = strtok_r (NULL, ",", &end)) {
if (map_syscall_name_to_number (p, &tmp) == 0)
if (try_one (tmp) == 0) {
free (s);
goto done;
}
}
free (s);
}
}
}
} }
#endif /* AFS_SYSCALL || AFS_SYSCALL2 || AFS_SYSCALL3 */ #endif /* AFS_SYSCALL || AFS_SYSCALL2 || AFS_SYSCALL3 */