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Implement VFS syscalls
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This commit is contained in:
Kamil Kowalczyk
2026-02-15 21:34:07 +01:00
parent 0f5bd48328
commit 7726fd2f00
19 changed files with 307 additions and 31 deletions
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33
kernel/proc/proc.c
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@@ -103,25 +103,38 @@ struct elf_aux proc_load_segments (struct proc* proc, uint8_t* elf) {
return aux;
}
struct proc* proc_from_file (const char* mountpoint, const char* path) {
struct proc* proc_from_file (struct procgroup* procgroup, const char* mountpoint,
const char* path) {
struct fs_desc_buffer desc;
if (vfs_describe (mountpoint, path, &desc) != ST_OK)
if (vfs_open (procgroup, mountpoint, path) != ST_OK)
return NULL;
if (desc.type != FS_FILE)
if (vfs_describe (procgroup, mountpoint, path, &desc) != ST_OK) {
vfs_close (procgroup, mountpoint, path);
return NULL;
}
if (desc.type != FS_FILE) {
vfs_close (procgroup, mountpoint, path);
return NULL;
}
uint8_t* temp_buffer = malloc (desc.size);
if (temp_buffer == NULL)
return NULL;
if (vfs_read (mountpoint, path, temp_buffer, 0, desc.size) != ST_OK) {
free (temp_buffer);
if (temp_buffer == NULL) {
vfs_close (procgroup, mountpoint, path);
return NULL;
}
if (vfs_read (procgroup, mountpoint, path, temp_buffer, 0, desc.size) != ST_OK) {
free (temp_buffer);
vfs_close (procgroup, mountpoint, path);
return NULL;
}
vfs_close (procgroup, mountpoint, path);
bool ok = proc_check_elf (temp_buffer);
DEBUG ("Spawning %s:%s, elf header %s\n", mountpoint, path, ok ? "ok" : "bad");
@@ -300,11 +313,11 @@ void proc_init (void) {
irq_attach (&proc_irq_sched, NULL, CPU_REQUEST_SCHED);
#endif
struct proc* spin_proc = proc_from_file ("ramdisk", "/spin");
struct proc* spin_proc = proc_from_file (NULL, "ramdisk", "/spin");
struct cpu* spin_cpu = thiscpu;
proc_register (spin_proc, &spin_cpu);
struct proc* init = proc_from_file ("ramdisk", "/init");
struct proc* init = proc_from_file (NULL, "ramdisk", "/init");
init->procgroup->capabilities |= (PROC_CAP_TERMINAL | PROC_CAP_KB);
struct cpu* init_cpu = thiscpu;
proc_register (init, &init_cpu);