/* * System call table mapper * * (C) 2016 Arnaldo Carvalho de Melo * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. * * This program is distributed in the hope it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. */ #include "syscalltbl.h" #include #ifdef HAVE_SYSCALL_TABLE #include #include #include "util.h" #if defined(__x86_64__) #include const int syscalltbl_native_max_id = SYSCALLTBL_x86_64_MAX_ID; static const char **syscalltbl_native = syscalltbl_x86_64; #endif struct syscall { int id; const char *name; }; static int syscallcmpname(const void *vkey, const void *ventry) { const char *key = vkey; const struct syscall *entry = ventry; return strcmp(key, entry->name); } static int syscallcmp(const void *va, const void *vb) { const struct syscall *a = va, *b = vb; return strcmp(a->name, b->name); } static int syscalltbl__init_native(struct syscalltbl *tbl) { int nr_entries = 0, i, j; struct syscall *entries; for (i = 0; i <= syscalltbl_native_max_id; ++i) if (syscalltbl_native[i]) ++nr_entries; entries = tbl->syscalls.entries = malloc(sizeof(struct syscall) * nr_entries); if (tbl->syscalls.entries == NULL) return -1; for (i = 0, j = 0; i <= syscalltbl_native_max_id; ++i) { if (syscalltbl_native[i]) { entries[j].name = syscalltbl_native[i]; entries[j].id = i; ++j; } } qsort(tbl->syscalls.entries, nr_entries, sizeof(struct syscall), syscallcmp); tbl->syscalls.nr_entries = nr_entries; return 0; } struct syscalltbl *syscalltbl__new(void) { struct syscalltbl *tbl = malloc(sizeof(*tbl)); if (tbl) { if (syscalltbl__init_native(tbl)) { free(tbl); return NULL; } } return tbl; } void syscalltbl__delete(struct syscalltbl *tbl) { zfree(&tbl->syscalls.entries); free(tbl); } const char *syscalltbl__name(const struct syscalltbl *tbl __maybe_unused, int id) { return id <= syscalltbl_native_max_id ? syscalltbl_native[id]: NULL; } int syscalltbl__id(struct syscalltbl *tbl, const char *name) { struct syscall *sc = bsearch(name, tbl->syscalls.entries, tbl->syscalls.nr_entries, sizeof(*sc), syscallcmpname); return sc ? sc->id : -1; } #else /* HAVE_SYSCALL_TABLE */ #include struct syscalltbl *syscalltbl__new(void) { struct syscalltbl *tbl = malloc(sizeof(*tbl)); if (tbl) tbl->audit_machine = audit_detect_machine(); return tbl; } void syscalltbl__delete(struct syscalltbl *tbl) { free(tbl); } const char *syscalltbl__name(const struct syscalltbl *tbl, int id) { return audit_syscall_to_name(id, tbl->audit_machine); } int syscalltbl__id(struct syscalltbl *tbl, const char *name) { return audit_name_to_syscall(name, tbl->audit_machine); } #endif /* HAVE_SYSCALL_TABLE */ b3f11814bdf692aaf501'>drivers/usb/usbip
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authorJan Beulich <JBeulich@suse.com>2017-01-23 08:12:19 -0700
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2017-01-23 13:27:41 -0500
commitb32728ffef7f233dbdabb3f11814bdf692aaf501 (patch)
tree5bf0326545d0c4525a43f3c50cfcdef09f0baa88 /drivers/usb/usbip
parentd61b7f972dab2a7d187c38254845546dfc8eed85 (diff)
xen-blkfront: feature flags handling adjustments
Don't truncate the "feature-persistent" value read from xenstore: Any non-zero value is supposed to enable the feature, just like is already being done for feature_secdiscard. Just like the other feature_* fields, feature_flush and feature_fua are boolean flags, and hence fit well into a single bit. Keep all bit fields together to limit gaps. Signed-off-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/usb/usbip')