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bpos_parse() now handles symbol constants

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We can now parse U32_MAX/U64_MAX, as printed by bch2_bpos_to_text().

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2023-08-01 16:57:00 -04:00
parent 71ed9f183b
commit 3e39c57c70
1 changed files with 32 additions and 3 deletions
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35
tools-util.c
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@ -605,6 +605,35 @@ int dev_mounted(char *dev)
return 2;
}
static int kstrtoull_symbolic(const char *s, unsigned int base, unsigned long long *res)
{
if (!strcmp(s, "U64_MAX")) {
*res = U64_MAX;
return 0;
}
if (!strcmp(s, "U32_MAX")) {
*res = U32_MAX;
return 0;
}
return kstrtoull(s, base, res);
}
static int kstrtouint_symbolic(const char *s, unsigned int base, unsigned *res)
{
unsigned long long tmp;
int rv;
rv = kstrtoull_symbolic(s, base, &tmp);
if (rv < 0)
return rv;
if (tmp != (unsigned long long)(unsigned int)tmp)
return -ERANGE;
*res = tmp;
return 0;
}
struct bpos bpos_parse(char *buf)
{
char *orig = strdup(buf);
@ -620,14 +649,14 @@ struct bpos bpos_parse(char *buf)
u64 inode_v = 0, offset_v = 0;
u32 snapshot_v = 0;
if (kstrtoull(inode_s, 10, &inode_v))
if (kstrtoull_symbolic(inode_s, 10, &inode_v))
die("invalid bpos.inode %s", inode_s);
if (kstrtoull(offset_s, 10, &offset_v))
if (kstrtoull_symbolic(offset_s, 10, &offset_v))
die("invalid bpos.offset %s", offset_s);
if (snapshot_s &&
kstrtouint(snapshot_s, 10, &snapshot_v))
kstrtouint_symbolic(snapshot_s, 10, &snapshot_v))
die("invalid bpos.snapshot %s", snapshot_s);
return (struct bpos) { .inode = inode_v, .offset = offset_v, .snapshot = snapshot_v };