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Add yet another tiny helper to manipulate flags

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This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2020-04-09 14:24:11 +02:00
parent 7d6342e401
commit 0da965037e
4 changed files with 7 additions and 20 deletions
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6
src/basic/btrfs-util.c
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@ -175,11 +175,7 @@ int btrfs_subvol_set_read_only_fd(int fd, bool b) {
if (ioctl(fd, BTRFS_IOC_SUBVOL_GETFLAGS, &flags) < 0)
return -errno;
if (b)
nflags = flags | BTRFS_SUBVOL_RDONLY;
else
nflags = flags & ~BTRFS_SUBVOL_RDONLY;
nflags = UPDATE_FLAG(flags, BTRFS_SUBVOL_RDONLY, b);
if (flags == nflags)
return 0;

12
src/basic/fd-util.c
View file

@ -144,11 +144,7 @@ int fd_nonblock(int fd, bool nonblock) {
if (flags < 0)
return -errno;
if (nonblock)
nflags = flags | O_NONBLOCK;
else
nflags = flags & ~O_NONBLOCK;
nflags = UPDATE_FLAG(flags, O_NONBLOCK, nonblock);
if (nflags == flags)
return 0;
@ -167,11 +163,7 @@ int fd_cloexec(int fd, bool cloexec) {
if (flags < 0)
return -errno;
if (cloexec)
nflags = flags | FD_CLOEXEC;
else
nflags = flags & ~FD_CLOEXEC;
nflags = UPDATE_FLAG(flags, FD_CLOEXEC, cloexec);
if (nflags == flags)
return 0;

4
src/basic/macro.h
View file

@ -451,8 +451,10 @@ static inline int __coverity_check_and_return__(int condition) {
ans; \
})
#define UPDATE_FLAG(orig, flag, b) \
((b) ? ((orig) | (flag)) : ((orig) & ~(flag)))
#define SET_FLAG(v, flag, b) \
(v) = (b) ? ((v) | (flag)) : ((v) & ~(flag))
(v) = UPDATE_FLAG(v, flag, b)
#define FLAGS_SET(v, flags) \
((~(v) & (flags)) == 0)

5
src/shared/efi-loader.c
View file

@ -135,10 +135,7 @@ int efi_set_reboot_to_firmware(bool value) {
if (r < 0)
return r;
if (value)
b_new = b | EFI_OS_INDICATIONS_BOOT_TO_FW_UI;
else
b_new = b & ~EFI_OS_INDICATIONS_BOOT_TO_FW_UI;
b_new = UPDATE_FLAG(b, EFI_OS_INDICATIONS_BOOT_TO_FW_UI, value);
/* Avoid writing to efi vars store if we can due to firmware bugs. */
if (b != b_new)