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fsck_minix,mkfs_minix: fix "strict-aliasing" warnings

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2017-08-16 11:53:48 +02:00
parent c4367d7227
commit dce39c9894
2 changed files with 13 additions and 7 deletions
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9
util-linux/fsck_minix.c
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@ -173,7 +173,10 @@ struct globals {
/* Bigger stuff */ /* Bigger stuff */
struct termios sv_termios; struct termios sv_termios;
char superblock_buffer[BLOCK_SIZE]; union {
char superblock_buffer[BLOCK_SIZE];
struct minix_superblock Super;
} u;
char add_zone_ind_blk[BLOCK_SIZE]; char add_zone_ind_blk[BLOCK_SIZE];
char add_zone_dind_blk[BLOCK_SIZE]; char add_zone_dind_blk[BLOCK_SIZE];
IF_FEATURE_MINIX2(char add_zone_tind_blk[BLOCK_SIZE];) IF_FEATURE_MINIX2(char add_zone_tind_blk[BLOCK_SIZE];)
@ -207,7 +210,7 @@ struct globals {
#define name_depth (G.name_depth ) #define name_depth (G.name_depth )
#define name_component (G.name_component ) #define name_component (G.name_component )
#define sv_termios (G.sv_termios ) #define sv_termios (G.sv_termios )
#define superblock_buffer (G.superblock_buffer ) #define superblock_buffer (G.u.superblock_buffer)
#define add_zone_ind_blk (G.add_zone_ind_blk ) #define add_zone_ind_blk (G.add_zone_ind_blk )
#define add_zone_dind_blk (G.add_zone_dind_blk ) #define add_zone_dind_blk (G.add_zone_dind_blk )
#define add_zone_tind_blk (G.add_zone_tind_blk ) #define add_zone_tind_blk (G.add_zone_tind_blk )
@ -247,7 +250,7 @@ enum {
#define Inode1 (((struct minix1_inode *) inode_buffer)-1) #define Inode1 (((struct minix1_inode *) inode_buffer)-1)
#define Inode2 (((struct minix2_inode *) inode_buffer)-1) #define Inode2 (((struct minix2_inode *) inode_buffer)-1)
#define Super (*(struct minix_superblock *)(superblock_buffer)) #define Super (G.u.Super)
#if ENABLE_FEATURE_MINIX2 #if ENABLE_FEATURE_MINIX2
# define ZONES ((unsigned)(version2 ? Super.s_zones : Super.s_nzones)) # define ZONES ((unsigned)(version2 ? Super.s_zones : Super.s_nzones))

11
util-linux/mkfs_minix.c
View File

@ -142,7 +142,10 @@ struct globals {
unsigned currently_testing; unsigned currently_testing;
char root_block[BLOCK_SIZE]; char root_block[BLOCK_SIZE];
char superblock_buffer[BLOCK_SIZE]; union {
char superblock_buffer[BLOCK_SIZE];
struct minix_superblock SB;
} u;
char boot_block_buffer[512]; char boot_block_buffer[512];
unsigned short good_blocks_table[MAX_GOOD_BLOCKS]; unsigned short good_blocks_table[MAX_GOOD_BLOCKS];
/* check_blocks(): buffer[] was the biggest static in entire bbox */ /* check_blocks(): buffer[] was the biggest static in entire bbox */
@ -166,7 +169,7 @@ static ALWAYS_INLINE unsigned div_roundup(unsigned size, unsigned n)
#define INODE_BUF1 (((struct minix1_inode*)G.inode_buffer) - 1) #define INODE_BUF1 (((struct minix1_inode*)G.inode_buffer) - 1)
#define INODE_BUF2 (((struct minix2_inode*)G.inode_buffer) - 1) #define INODE_BUF2 (((struct minix2_inode*)G.inode_buffer) - 1)
#define SB (*(struct minix_superblock*)G.superblock_buffer) #define SB (G.u.SB)
#define SB_INODES (SB.s_ninodes) #define SB_INODES (SB.s_ninodes)
#define SB_IMAPS (SB.s_imap_blocks) #define SB_IMAPS (SB.s_imap_blocks)
@ -234,7 +237,7 @@ static void write_tables(void)
xlseek(dev_fd, BLOCK_SIZE, SEEK_SET); xlseek(dev_fd, BLOCK_SIZE, SEEK_SET);
msg_eol = "can't write superblock"; msg_eol = "can't write superblock";
xwrite(dev_fd, G.superblock_buffer, BLOCK_SIZE); xwrite(dev_fd, G.u.superblock_buffer, BLOCK_SIZE);
msg_eol = "can't write inode map"; msg_eol = "can't write inode map";
xwrite(dev_fd, G.inode_map, SB_IMAPS * BLOCK_SIZE); xwrite(dev_fd, G.inode_map, SB_IMAPS * BLOCK_SIZE);
@ -541,7 +544,7 @@ static void setup_tables(void)
unsigned sb_zmaps; unsigned sb_zmaps;
unsigned i; unsigned i;
/* memset(G.superblock_buffer, 0, BLOCK_SIZE); */ /* memset(G.u.superblock_buffer, 0, BLOCK_SIZE); */
/* memset(G.boot_block_buffer, 0, 512); */ /* memset(G.boot_block_buffer, 0, 512); */
SB_MAGIC = G.magic; SB_MAGIC = G.magic;
SB_ZONE_SIZE = 0; SB_ZONE_SIZE = 0;