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Create sparse files on UNIX and when Linux does not have fallocate available.

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This commit is contained in:
Natalia Portillo
2021-03-30 02:29:00 +01:00
parent 9c4703b11f
commit 3827aae827
3 changed files with 128 additions and 19 deletions
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21
setter/src/linux/sparse.c
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@@ -37,12 +37,11 @@ Copyright (C) 2011-2021 Natalia Portillo
void LinuxSparse(const char* path)
{
int ret;
int rc, wRc, cRc, zRc;
FILE* h;
unsigned char* buffer;
int i;
int fd;
int ret;
int rc, wRc, cRc, zRc;
FILE* h;
int i;
int fd;
ret = chdir(path);
@@ -78,9 +77,6 @@ void LinuxSparse(const char* path)
if(h == NULL) { rc = errno; }
else
{
buffer = malloc(4096 * 3);
memset(buffer, 0, 4096 * 3);
for(i = 0; i < 4096 * 3; i += CLAUNIA_SIZE)
{
ret = fwrite(clauniaBytes, CLAUNIA_SIZE, 1, h);
@@ -97,12 +93,11 @@ void LinuxSparse(const char* path)
ret = fclose(h);
if(ret) { cRc = errno; }
free(buffer);
}
log_write("\tFile name = \"%s\", size = %d, rc = %d, wRc = %d, cRc = %d, sRc = %d\n",
"SMALL",
4096 * 3,
4096 * 4,
rc,
wRc,
cRc,
@@ -116,9 +111,6 @@ void LinuxSparse(const char* path)
if(h == NULL) { rc = errno; }
else
{
buffer = malloc(4096 * 30);
memset(buffer, 0, 4096 * 30);
for(i = 0; i < 4096 * 30; i += CLAUNIA_SIZE)
{
ret = fwrite(clauniaBytes, CLAUNIA_SIZE, 1, h);
@@ -135,7 +127,6 @@ void LinuxSparse(const char* path)
ret = fclose(h);
if(ret) { cRc = errno; }
free(buffer);
}
log_write("\tFile name = \"%s\", size = %d, rc = %d, wRc = %d, cRc = %d, sRc = %d\n",